數(shù)學(xué)競賽AMC12詞匯

1、數(shù)學(xué)競賽 AMC12 詞匯Aabbreviation 簡寫符號；簡寫absolute error絕對誤差absolute value絕對值algebra 代數(shù)algebraic 代數(shù)的algebraic equation 代數(shù)方程algebraic expression 代數(shù)式代數(shù)分式；代數(shù)代數(shù)不等式代數(shù)運(yùn)算（交）錯角交錯弓形accuracy 準(zhǔn)確度acute angle 銳角acute-angled triangle 銳角三角形add 加addition 加法addition formula 加法公式addition law 加法定律addition law(of probability)

2、(概率)加法定律algebraic fraction分?jǐn)?shù)式algebraic inequalityalgebraic operationalternate anglealternate segmentaltitude 高；高度；頂垂線；高線ambiguous case 兩義情況；二義情況amount 本利和；總數(shù)additive property 可加性analysis 分析；解析adjacent angle 鄰角analytic geometry 解析幾何angle 角adjacent side 鄰邊angle at the centre 圓心角angle at the circumfere

3、nce 圓周角angle between a line and a plane 直與平面的交角angle between two planes兩平面的交角angle bisection 角平分angle bisector 角平分線；分角線angle in the alternate segment 交錯弓形的圓周角angle in the same segment 同弓形內(nèi)的圓周角angle of depression 俯角angle of elevation xxangle of greatest slope最大斜率的角angle of inclination 傾斜角angle of int

4、ersection 相交角；交角angle of rotation 旋轉(zhuǎn)角angle of the sector 扇形角angle sum of a triangle三角形內(nèi)角和angles at a point 同頂角annum(X%per annum)年(年利J率 X%anti-clockwise direction逆時針方向；返時針方向anti-logarithm逆對數(shù)；反對數(shù)anti-symmetric 反對稱apex頂點(diǎn)approach接近；趨近approximate value 近似值approximation 近似； 略計； 逼近Arabic system xx 數(shù)字系統(tǒng)arbi

5、trary 任意arbitrary constant 任意常數(shù)arc 弧arc length 弧長arc-cosine function 反 xx 函數(shù)arc-sin function 反正弦函數(shù)arc-tangent function 反正切函數(shù)area 面積arithmetic 算術(shù)arithmetic mean 算術(shù)平均；等差 xx ；算術(shù) xxarithmetic progression 算術(shù)級數(shù)；等差級數(shù)arithmetic sequence 等差序列arithmetic series 等差級數(shù)arm 邊ascending order 遞升序ascending powers of X

6、 X 的升冪associative law 結(jié)合律assumed mean 假定平均數(shù)assumption 假定；假設(shè)average 平均；平均數(shù)；平均值average speed 平均速率axiom 公理axis 軸axis of parabola拋物線的軸axis of symmetry對稱軸Bback substitution 回代arrow 前號數(shù)學(xué)競賽AMC12詞匯bar chart 棒形圖；條線圖；條形圖;線條圖base （1）底；（2）基；基數(shù)base angle 底角base area 底面base line 底線base number 底數(shù)； 基數(shù)base of logari

7、thm對數(shù)的底bearing方位（角）；角方向（角）bell-shaped curve 鐘形圖bias偏差；偏倚billion 十億binary number 二進(jìn)數(shù)binary operation 二元運(yùn)算binary scale 二進(jìn)法binary system 二進(jìn)制binomial 二項(xiàng)式binomial expression 二項(xiàng)式bisect 平分；等分bisection method分半法；分半方法bisector 等分線；平分線boundary condition 邊界條件boundary line 界（線）；邊界bounded有界的bounded above 有上界的；上有界

8、的bounded below 有下界的；下有界的bounded function有界函數(shù)brace大括號bracket 括號breadth 闊度broken line graph 折線圖Ccalculation 計算calculator 計算器；計算器cancel消法；相消canellation law 消去律capacity 容量Cartesian coordinates xx 坐標(biāo)Cartesian plane xx 平面category 類型；xxcentral line 中線central tendency集中趨centre 中心；心centre of a circle 圓心centr

9、oid 形心；距心certain event必然事件chance機(jī)會change of base 基的變換change of subject主項(xiàng)變換change of variable 換元； 變量的換chart 圖；圖表checking 驗(yàn)算chord 弦chord of contact 切點(diǎn)弦circle 圓circular 圓形；圓的circular function 圓函數(shù)； 三角函數(shù)circular measure 弧度法circumcentre 外心；外接圓心circumcircle 外接圓circumference 圓周circumradius夕卜接圓半徑collection o

10、f terms 并項(xiàng)collinear 共線collinear planes 共線面circumscribed circle 夕卜接圓class 區(qū)；組；類class boundary 組界class interval 組區(qū)間；組距class limit 組限；區(qū)限class mark 組中點(diǎn)； 區(qū)中點(diǎn)classification 分類clnometer測斜儀clockwise dirction順時針方向closed convex region 閉 凸 區(qū)域closed interval 閉區(qū)間coefficient 系數(shù)coincide 迭合；重合column (1)歹!J;縱行；(2)柱c

11、ombination 組合common chord 公弦common denominator 同分母；公分母common difference 公差common divisor 公約數(shù)；公約common factor 公因子；公因子common logarithm 常用對數(shù)common multiple 公位數(shù)；公倍common ratio 公比common tangetn 公切commutative law 交換律comparable可比較的數(shù)學(xué)競賽 AMC12 詞匯compass xxcompass bearing xx 方位角compasses 圓規(guī)compasses construct

12、ion 圓規(guī)作圖complement 余；補(bǔ)余complementary angle 余角complementary event 互補(bǔ)事件complementary probability 互補(bǔ)概率completing the square 配方complex number 復(fù)數(shù)complex root 復(fù)數(shù)根composite number 復(fù)合數(shù)；合成數(shù)compound bar chart 綜合棒形圖compound discount 復(fù)折扣compound interest 復(fù)利；復(fù)利息computation 計算computer 計算機(jī)；電子計算器concave 凹concave do

13、wnward 凹向下的Ddata 數(shù)據(jù)decagon 十邊形decay 衰變decay factor 衰變因子decimal 小數(shù)decimal place小數(shù)位decimal point小數(shù)點(diǎn)decimal system 十進(jìn)制decrease 遞減decreasing function 遞減函數(shù)；下降函數(shù)數(shù)學(xué)競賽AMC12詞匯dividend (1) 被除數(shù)； (2) 股息delete 刪除；刪去decreasing sequence 遞減序列；下降序列decreasing series 遞減級數(shù)；下降級數(shù)decrement 減量deduce 演繹deduction 推論deductive

14、 reasoning 演繹推理definite 確定的；定的distance 距離distance formula 距離公式distinct roots 相異根distincr solution 相異解distribution 公布distrivutive law 分配律divide 除divisible 可整除division 除法division algorithm 除法算式divisor 除數(shù)；除式；因子divisor of zero 零因子dodecagon 十二邊形dot 點(diǎn)double root 二重根due east/ south/ west /north 向xx/ xx/ 西/

15、 xxdefiniton 定義degree (1) 度； (2) 次degree of a polynomial 多項(xiàng)式的次數(shù)degree of accuracy 準(zhǔn)確度degree of precision 精確度denary number 十進(jìn)數(shù)denary scale 十進(jìn)法denary system 十進(jìn)制denominator 分母dependence (1)相關(guān)；(2)應(yīng)變dependent event(s)相關(guān)事件；xx 事件；從屬事件dependent variable應(yīng)變量；應(yīng)變數(shù)depreciation 折舊descending order 遞降序descending po

16、wers of X X 的降序detached coefficients 分離系數(shù)(法)deviation 偏差；變差deviation from the mean 離均差diagonal 對角diagram 圖；圖表diameter 直徑difference 差digit 數(shù)字dimension 量；量網(wǎng)；維（數(shù)）direct proportion 正比例direct tax, direct taxation直接稅direct variation 正變（分）directed angle 有向角directed number 有向數(shù)direction 方向；方位discontinuous 間斷

17、（的）；非連續(xù)（的）；不連續(xù)（的）discount 折扣discount per cent 折扣百分率discrete 分立；離散discrete data離散數(shù)據(jù)；間斷數(shù)據(jù)discriminant 判別式dispersion 離差displacement 位移disprove 反證Eedge 棱；邊elimination 消法elimination method 消去法；消元法elongation 伸張；展empirical data 實(shí)驗(yàn)數(shù)據(jù)empirical formula 實(shí)驗(yàn)公式empirical probability 實(shí)驗(yàn)概率；經(jīng)驗(yàn)概率enclosure 界限end point

18、端點(diǎn) 點(diǎn)entire surd 整方根equal 相等equal ratios theorem 等比定理equal roots 等根equality 等（式）equality sign 等號equation 方程equation in one unknown 一元方程equation in two unknowns（variables） 二元方程equation of a straight line 直線方程equation of locus 軌跡方程equiangular 等角 （ 的 ）extreme value 極值equidistant 等距 （ 的 ）equilaeral 等邊 （

19、的）equilateral polygon 等邊多邊形數(shù)學(xué)競賽 AMC12 詞匯equilateral triangle 等邊三角形equivalent 等價 （ 的）error 誤差escribed circle 旁切圓estimate 估計；估計量Eulers formula xx 公式； xx 公式evaluate 計值even function 偶函數(shù)even number 偶數(shù)evenly distributed 均勻分布的event 事件exact 真確exact solution 準(zhǔn)確解；精確解；真確解exact value 法確解；精確解；真確excentre 外心except

20、ion 例外excess 起exclusive 不包含exclusive events 互斥事件exercise 練習(xí)expand 展開expand form xxexpansion 展式expectation 期望expectation value, expected value期望值；預(yù)期值experiment 實(shí)驗(yàn)；試驗(yàn)experimental 試驗(yàn)的experimental probability 實(shí)驗(yàn)概率exponent 指數(shù)example 例express in terms of . 以表達(dá)expression 式；數(shù)式extension 夕卜延；延長；擴(kuò)張；擴(kuò)充exterior

21、angle 外角external angle bisector夕卜分角external point of division 夕卜分點(diǎn)extreme point 極值點(diǎn)Fface 面factor因子；因式；商factor method 因式分解法factor theorem 因子定理； 因式定理factorial 階乘factorization因子分解；因式分解factorization of polynomial 多項(xiàng)式因式分解FALSE 假(的)feasible solution可行解；容許解Fermat s last theorem xx 最后定理Fibonacci number 斐波那契

22、數(shù)；黃金分割數(shù)Fibonacci sequence 斐波 xx 序歹！Jfictitious mean彳段定平均數(shù)figure (1)圖(形)；(2)數(shù)字finite 有限finite population 有限總體finite sequence有限序歹！Jfinite series 有限級數(shù)first quartile 第一四分位數(shù)first term 首項(xiàng)fixed deposit定期存款fixed point 定點(diǎn)flow chart 流程圖foot of perpendicular 垂足for all X 對所有 Xfor each /every X 對每一 Xform 形式；型for

23、mal proof 形式化的證明format 格式；規(guī)格formula(formulae)公式four rules 四則four-figure table四位數(shù)表fourth root 四次方根fraction 分?jǐn)?shù)；分式fractional inequality 分式不等式free fall 自由下墜frequency 頻數(shù)；頻率frequency distribution 頻數(shù)分布；頻率分布frequency distribution table 頻數(shù)分布表frequency polygon 頻數(shù)多邊形；頻率多邊形frustum 平截頭體function 函數(shù)function of fun

24、ction 復(fù)合函數(shù)；迭函數(shù)functional notation 函數(shù)記號fraction in lowest term 最簡分?jǐn)?shù)Gfractional equation 分式方程gain 增益；賺；盈利fractional index分?jǐn)?shù)指數(shù)數(shù)學(xué)競賽AMC12詞匯group 組；geometric series等比級數(shù)grouped data分組數(shù)據(jù)；分類數(shù)據(jù)geometry幾何；幾何學(xué)grouping terms 并項(xiàng)；集項(xiàng)given給定；已知growth增長golden section 黃金分1RJgrowth factor增長因子grade等級gain per cent 賺率；增益率

25、；盈利百分率game (1)對策；(2)博奕general form 一般式；通式general solution 通解；般解general term 通項(xiàng)geoborad幾何板geometric mean 幾何平均數(shù)；等比中項(xiàng)geometric progression幾何級數(shù)；等比級數(shù)geometric sequence 等比序列g(shù)radient (1) 斜率；傾斜率；(2)梯度grand total 總計graph圖像；圖形；圖表graph paper 圖表紙graphical method 圖解法graphical representation 圖示；以圖樣表達(dá)graphical sol

26、ution 圖解greatest term 最大項(xiàng)greatest value 最大值grid lines 網(wǎng)網(wǎng)格線Hhalf closed interval半閉區(qū)間half open interval半開區(qū)間head正面（錢幣）height 高（度）hemisphere半球體；半球heptagon七邊形Herons formula希羅公式hexagon六邊形higher order derivative xx 導(dǎo)數(shù)highest common factor（H.C.F） 最大公因子；最高公因式；最高公因子Hindu-Arabic numeral xx 數(shù)字histogram 組織圖；直方圖；

27、矩形圖horizontal水平的；水平horizontal line 橫線；水平線hyperbola 雙曲線hypotenuse 斜邊Iidentical 全等；恒等identity 等（式）identity relation恒等關(guān)系式if and only if/iff當(dāng)且僅當(dāng)；若且僅若if.，then 若.貝U;如果.貝Uillustration 例證；說明image像點(diǎn)；像imaginary circle 虛圓imaginary number 虛數(shù)imaginary root 虛根implication蘊(yùn)涵式；蘊(yùn)含式imply蘊(yùn)涵；蘊(yùn)含impossible event 不可能事件impr

28、oper fraction彳取分?jǐn)?shù)inclination 傾角；斜角inclined plane 斜面included angle 夾角included side 夾邊inclusive 包含的；可兼的inconsistent 不相的（的）；不一致（的）increase 遞增；增力口increasing function遞增函數(shù)interior angles on the sameside ofthe transversal同旁內(nèi)角interior opposite angle 內(nèi)對角internal bisector內(nèi)分角internal division內(nèi)分1RJinter-quartil

29、e range 四分位數(shù)間距intersect 相交intersection （1）交集；（2）相交；（3）交占 八、interval 區(qū)間intuition 直觀invariance 不變性invariant （1） 不變的；（2）不變量；不變式inverse 反的；逆的inverse circular function 反三角函數(shù)inverse cosine function 反 xx 函數(shù)inverse function 反函數(shù)；逆函數(shù)inverse problem逆算問題internal point of division內(nèi)分點(diǎn)inverse sine function反正弦函數(shù)inv

30、erse proportion 反比例；逆比例數(shù)學(xué)競賽 AMC12 詞匯(分)inverse tangent function 反正切函inverse variation 反變 ( 分 ) ；逆變irrational equation 無理方程元；未定元數(shù)；未定系數(shù)indeterminate (1) 不定的； (2) 不定indeterminate coefficient 不定系indeterminate form 待定型；不定型irrational number 無理數(shù)index,indices 指數(shù)；指irreducibility 不可約性index notation 指數(shù)記數(shù)法incre

31、asing series 遞增級數(shù)increment 增量independence 獨(dú)立；自變independent event 獨(dú)立事件independent variable 自變量；獨(dú)立變量infinite populationinfinite sequence序列infinite seriesinfinitely manyinfinitesimal無限總體無限序列；無窮無限級數(shù)；無窮級無窮多無限小；無窮小irregular 不規(guī)則isosceles triangle 等腰三角形increasing sequence 遞增序列inequality 不等式；不等inequality sig

32、n 不等號infinite 無限；無窮infinity 無限 （大） ；無窮 （大）initial point始點(diǎn)；起點(diǎn)initial side 始邊initial value初值；始值input 輸入input box 輸入inscribed circle xxinsertion 插入insertion of brackets 加括號instantaneous 瞬時的integer 整數(shù)integral index整數(shù)指數(shù)integral solution 整數(shù)解integral value整數(shù)值intercept 截距；截段intercept form截距式intercept theore

33、m 截線定理interchange 互換interest 利息interest rate 利率interest tax 利息稅interior angle 內(nèi)角Jjoint variation 聯(lián)變 （ 分） ； 連變 （ 分 ）Kknown 己知LL.H.S. 末項(xiàng)law xx ；定 xxlaw of indices 指數(shù) xx ；指數(shù)定 xx數(shù)學(xué)競賽AMC12詞匯law of trichotomy 三分 xxleading coefficient首項(xiàng)系數(shù)least common multiple, lowest common multiple (L.C.M)最小公倍數(shù)；最低公倍式least

34、 value 最小值lemma引理length 長(度)letter 文字；字母like surd 同類根式like terms 同類項(xiàng)limit 極限line 線；行l(wèi)ine of best-fit最佳擬合line of greatest slope最大斜率的直；最大斜率line of intersection 交線line segment 線段linear 線性；一次linear equation線性方程；一次方程linear equation in two unknowns 二元一次方程；二元線性方程linear inequality一次不等式；線性不等式linear programmi

35、ng線性規(guī)劃literal coefficient文字系數(shù)literal equation文字方程load負(fù)荷loaded coin 不 xx 錢幣loaded die 不 xx 骰子locus, loci 軌跡logarithm 對數(shù)logarithmic equation 對數(shù)方程logarithmic function 對數(shù)函數(shù)logic 邏輯logical deduction 邏輯推論；邏輯推理logical step 邏輯步驟long division method 長除法loss 賠本；虧蝕loss per cent 賠率；虧蝕百分率lower bound 下界lower limi

36、t 下限lower quartile 下四分位數(shù)lowest common multiple(L.C.M) 最 小公倍數(shù)Mmagnitude 量；數(shù)量； xx ；大小major axis 長軸major sector 優(yōu)扇形；大扇形major segment 優(yōu)弓形；大弓形mantissa 尾數(shù)mantissa of logarithm 對數(shù)的尾數(shù)；對數(shù)的定值部many-sided figure 多邊形marked price 標(biāo)價mathematical induction 數(shù)學(xué) xxmathematical sentence 數(shù)句mathematics 數(shù)學(xué)maximize 極大maxim

37、um absolute error 最大絕對誤差maximum point 極大點(diǎn)major arc 優(yōu)弧；大弧mean 平均 （ 值） ；平均數(shù)；中數(shù)maximum value 極大值mean deviation中均差；平均偏差measure of dispersion 離差的量度measurement 量度median (1)中位數(shù)；(2)中線meet相交；相遇mensuration 計量；求積法method方法method of completing square 酉己方法method of substitution代換法； 換元法metric unit十進(jìn)制單位mid-point 中點(diǎn)

38、mid-point formula中點(diǎn)公式mid-point theorem中點(diǎn)定理million 百萬minimum point 極小點(diǎn)minimum value 極小值minor (1)子行列式；(2)劣；較小的minor arc 劣??；小弧minor axis 短軸minor sector 劣扇形；小扇形minor segment 劣弓形； 小弓形minus 減minute 分mixed number(fraction) 帶分?jǐn)?shù)modal class 眾數(shù)組mode眾數(shù)model模型monomial單項(xiàng)式multinomial 多項(xiàng)式multiple 倍數(shù)minimize 極小數(shù)學(xué)競賽A

39、MC12詞匯multiple root 多重根multiplicand 被乘數(shù)multiplication乘法multiplicationlaw （of probability）（概率）乘法定律multiplicative property 可乘性multiplier 乘數(shù)；乘式multiply 乘mutually exclusive events 互斥事件mutually independent 獨(dú)立；互相獨(dú)立mutually perpendicular lines 互相垂直natural number 自然數(shù)negative 負(fù)negative angle負(fù)角negative index負(fù)

40、指數(shù)negative integer 負(fù)整數(shù)negative number 負(fù)數(shù)neighborhood 鄰域net凈（值）n-gon n邊形nonagon xx 形non-collinear 不共線non-linear 非線性Nn factorial n 階乘non-negative 非負(fù)的non-trivial非平凡的non-linear equation非線性方程non-zero 非零n th root n 次根；n次方根normal (1)垂直的；正交的；法線的 正態(tài)的(3)正常的；正規(guī)的normal curve 正態(tài)分 記 促懷1 分記促徽媲促徽憂？normal distributi

41、on正態(tài)分布，常態(tài)分布normal form 法線式notation t己法；t己號number 數(shù)number line 數(shù)線number pair 數(shù)偶number pattern 數(shù)型number plane 數(shù)平面number system 數(shù)系numeral數(shù)字；數(shù)碼numeral system 記數(shù)系統(tǒng)numerical數(shù)值的；數(shù)字的numerical expression 數(shù)字式numerical method 計算方法；數(shù)值法Ooblique 斜的oblique cone 斜圓錐oblique triangle斜三角形obtuse angle 鈍角obtuse-angled t

42、riangle 專屯角三角形octagon八邊形octahedron 八面體odd function 奇函數(shù)odd number 奇數(shù)one-one correspondence 對應(yīng)numerator 分子open interval 開區(qū)間數(shù)學(xué)競賽 AMC12 詞匯parallel lines平行（直線）parallelogram 平行四邊形parameter 參數(shù)；參變量partial fraction 部分分?jǐn)?shù)；分項(xiàng)分式polar coordinate system 極坐標(biāo)系統(tǒng)polar coordinates 極坐標(biāo)pole 極polygon多邊形polyhedron 多面體polyn

43、omial 多項(xiàng)式polynomial equation多項(xiàng)式方程positive 正positive index 正指數(shù)positive integer 正整數(shù)open sentence 開句operation 運(yùn)算opposite angle 對角opposite interior angle 內(nèi)對角opposite side 對邊optimal solution 最優(yōu)解order （1）序；次序；（2）階；級ordered pair 序偶o(jì)rigin 原點(diǎn)outcome 結(jié)果output輸出overlap 交迭；相交Pparabola 拋物線parallel 平行（的）positive

44、number 正數(shù)profit 盈利profit per cent 盈利百分率profits tax 利得稅progression 級數(shù)proof 證（ 題 ） ；證明proper fraction 真分?jǐn)?shù)property 性質(zhì)property tax 物業(yè)稅proportion 比例proportional 成比例protractor 量角器pyramid 棱錐 （體） ；角錐（體）Pythagoras Theorem 勾股定理Pythagorean triplet xx 三元數(shù)組partial sum 部分和power (1) 冪；乘方； (2) 功率； (3) 檢定力precise 精密

45、precision 精確度prime 素prime factor 質(zhì)因子；質(zhì)因素prime number 素數(shù)；質(zhì)數(shù)primitive (1) 本原的；原始的； (2)原函數(shù)principal (1) 主要的； (2) 本金prism 梭柱 ( 體) ；角柱 (體)prismoid 平截 防 xx 短 ?probability 概率problem 應(yīng)用題produce 延長product 乘積；積partial variation部分變 ( 分 )product rule 積法則particular solution 特解Pascal s triangle xxxx 三角形pattern 模型

46、；規(guī)律pegboard有孔版pentadecagon十五邊形pentagon五邊形per cent 百分率percentage 百分法；百分?jǐn)?shù)percentage decrease百分減少percentage error 百分誤差percentage increase百分增力口percentile 百分位數(shù)perfect number 完全數(shù)periodic function 周期函數(shù)permutation 排歹！Jperpendicular 垂線；垂直（于）perpendicular bisector垂直平分線;中垂線perpendicular line 垂直線pictogram 象形圖pi

47、e chart 餅圖；圓瓣圖pinboard 車丁板place holder 補(bǔ)位數(shù)字place value 位值plan （1） 平面圖；（2）計劃plane平面,、plane figure 平面圖形perfecr square完全平方plot繪圖perimeter 周長；周界uplus 加period 周期數(shù)學(xué)競賽 AMC12 詞匯point 點(diǎn)point circle 點(diǎn)圓point of contact 切點(diǎn)point of division 分點(diǎn)point of intersection 交點(diǎn)point-slope form 點(diǎn)斜式polar axis 極軸polar coordin

48、ate plane 極坐標(biāo)平面polar coordinate 極坐標(biāo)系統(tǒng)Qquadrant 象限quadratic equation 二次方程 （ 式 ）quadratic formula 二次公式quardratic function 二次函數(shù)quadratic polynomial 四邊形quantity 數(shù)量quartile 四分位數(shù)quotient 商；商式RR.H.S 右radian 弧度radian measure 弧度法radical 根式；根號；根數(shù)radius, radii 半徑random 隨機(jī)random experiment 隨機(jī)試驗(yàn)random number 隨機(jī)數(shù)

49、range 值域；區(qū)域；范圍；極差；分布域quadratic inequality 二次不等式rate 率；利率ratio 比 ; 比率rational expression 有理式；有理數(shù)式rational function 有理函數(shù)rational index 有理數(shù)指數(shù)rational number 有理數(shù)rationalization 有理化raw data 原始數(shù)據(jù)raw score 原始分（數(shù)）real axis 實(shí)軸real number 實(shí)數(shù)real root 實(shí)根reason 理由reciprocal 倒數(shù)rectangle 長方形；矩形rectangular coordin

50、ate plane 直角坐標(biāo)平面rectangular coordinates 直角坐rectilinear figure 直線圖形recurrent 循環(huán)的recurring decimal 循環(huán)小數(shù)reduce 簡化reducible 可約的；可化簡的reference angle 參考角reflex angle 優(yōu)角；反角region 區(qū)域regular 正；規(guī)則regular polygon 正多邊形reject 舍去；否定relation 關(guān)系；關(guān)系式rectangular block 長方體relative error相對誤差數(shù)學(xué)競賽 AMC12 詞匯root 根rotation

51、旋轉(zhuǎn)round angle 周角rounded number 舍數(shù)rounding(off)舍入；四舍五入row 行；棋行rule 規(guī)則；法(則)ruler 直尺Ssalaries tax xx 稅sample 抽樣；樣本sample space 樣本空間satisfy 滿足；適合scale 比例尺；標(biāo)度；圖尺scalene triangle 不等邊三角形；不規(guī)則三角形remainder 余數(shù)；余式；剩余remainder term 余項(xiàng)remainder theorem 余式定理removal of brackets 撤括號；去括號repeated trials 重復(fù)試驗(yàn)resolve 分解

52、revolution 旋轉(zhuǎn)； xxrhombus 菱形right angle 直角right circular cone 直立圓錐（體）right circular cylinder 直立圓柱（體）right prism 直立棱柱； 直立角柱（ 體）right pyramid 直立棱錐；直立角錐（體）right-angled triangle 直角二角形scientific notation科學(xué) t 己數(shù)法solution of triangle 三角形解法solve 解special angle 特殊角；特別角speed 速率sphere球形；球面square (1)平方；(2)正方形square bracket 方括號square number正方形數(shù)；平方數(shù)square root xx ;二次根standard deviation 標(biāo)準(zhǔn)差；標(biāo)準(zhǔn)偏離secant 1RJsecond 秒second quartile 第二四分位數(shù)(1)截section formula截點(diǎn)公式sector 扇式segment