如来自图,已知AD∥BC,AP平分∠DAB,BP平分∠ABC,点P恰好在CD上,则PD与PC的大小关系是( )
sp360问答anB解析:解:作PE∥AD,交AB于点E.∵AD∥B般C,∴PE∥BC∴∠DA输条故块P=∠EPA∵AP平分∠DAB,∴∠DAP=∠BAP,∴∠EAP=∠EPA,...
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在△ABC中,AC=BC,∠C=90°,将一块三角板的直角顶点放在斜边AB的中点P处,将三角板绕P点旋转,三角板的两直角边分别交AC、C来自B于D、E两点,如图所示。问PD与PE有何大小关系?并加以证明。
PD=PE。过P点作AC和BC的垂线,垂足分别为F、G。在Rt△ABC依台员担乎阶呀中,∵AC=BC,∴PF=PG∵∠DPF=∠EPG,且△DPF和△EPG均为直角三角形∴△DP...
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三角板绕P旋转,观察线段PD和PE之间有什么数量关系
(1)PD=PE证明:∵P为等腰直角360问答三角形的底边中点,∴PC=PA,∠CAP=∠PCE=45°∵∠CPA=∠EP兴注至参措算F=90°∴∠DPA=∠CPE∴△APD≌△...
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韩剧《魔女游戏》演员表?
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