華師大版-數(shù)學(xué)-七年級上冊-線段的計(jì)算問題-教案

初中-數(shù)學(xué)-打印版【同步教育信息】..【典型例題】①②123①632MN①若②若③若④若MNACB①②③④。M若M若）∵∴∵點(diǎn)M是12∴初中-數(shù)學(xué)-打印版初中-數(shù)學(xué)-打印版）∵∴∴∵點(diǎn)M是12∴∴CDEACDEB∵點(diǎn)C是12∵∵∴∵點(diǎn)E是∵∵6∴∴1215FEFABC15∵∴∵點(diǎn)F是∴3∴12∵初中-數(shù)學(xué)-打印版初中-數(shù)學(xué)-打印版13∴∴∴243點(diǎn)OP:點(diǎn)POk234kk設(shè)24k3k+k3023k∴∵點(diǎn)O是12∵∵∴∴和，和15－bMEAGFBD初中-數(shù)學(xué)-打印版初中-數(shù)學(xué)-打印版1215－bck而∵點(diǎn)M是12∴∴a=kb=kc=k，kkk++k∴abc15∴－4=1O到DABDCO【模擬試題】.C12①②③）初中-數(shù)學(xué)-打印版初中-數(shù)學(xué)-打印版013B與）ACBD點(diǎn)BPP））外上上上D.。ABC到，。，。ABCDN。.知CN的NA和C、BANMB【試題答案】.DBDB.；初中-數(shù)學(xué)-打印版初中-數(shù)學(xué)-打印版；1253，53∴）.點(diǎn)N12∴∴點(diǎn)N12∴∴C初中-數(shù)學(xué)-打印版初中-數(shù)學(xué)-打印版013B與）ACBD點(diǎn)BPP））外上上上D.。ABC到，。，。ABCDN。.知CN的NA和C、BANMB【試題答案】.DBDB.；初中-數(shù)學(xué)-打印版初中-數(shù)學(xué)-打印版；1253，53∴）.點(diǎn)N12∴∴點(diǎn)N12∴∴C初中-數(shù)學(xué)-打印版初中-數(shù)學(xué)-打印版013B與）ACBD點(diǎn)BPP））外上上上D.。ABC到，。，。ABCDN。.知CN的NA和C、BANMB【試題答案】.DBDB.；初中-數(shù)學(xué)-打印版初中-數(shù)學(xué)-打印版；1253，53∴）.點(diǎn)N12∴∴點(diǎn)N12∴∴C初中-數(shù)學(xué)-打印版初中-數(shù)學(xué)-打印版013B與）ACBD點(diǎn)BPP））外上上上D.。ABC到，。，。ABCDN。.知CN的NA和C、BANMB【試題答案】.DBDB.；初中-數(shù)學(xué)-打印版初中