- 问题详情:如图:已知,∠C=90°,AD=AC,DE⊥AB交BC于点E.若∠B=40°,则∠EAC=°.【回答】10°.【考点】全等三角形的判定与*质.【分析】根据∠C=90°AD=AC,求*△CAE≌△DAE,∠CAE=∠DAE=∠CAB,再由∠C=90°,∠B=40°,求出∠EAC的度数,然后即可求出∠AEC的度数.【解答】解:∵在△ABC中,∠C=90°,A...
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- 问题详情:如图,C是线段AB的中点,D、E分别是线段AC,CB上的点,且AD=AC,DE=AB,若AB=24cm,求线段CE的长. (第13题图)【回答】解:∵AC=BC=AB=12(cm),CD=AC=4(cm),DE=AB=14.4(cm),∴CE=DE﹣CD=10.4(cm).知识点:直...
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- However,unlessmoresupportcanbefound,nextmonth'sADACRallyeDeutschlandcouldbeOstberg'slastappearanceoftheseason.TheintegratedchildseatinthePassathasbeenawardedaprizebytheGermanmotoristassociationADACandisavailableasanoptionalextrafor255euros(twoseats...
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