初中数学证明题
1.如图1，?ABC中，AB=AC，?BAC和?ACB的平分线相交于点D，?ADC=130?，求?BAC的度数(
图1
2.如图，?ABC中，AD平分?CAB，BD?AD，DE?AC。求证:AE=BE。
C D
A E B
(3.如图，?ABC中，AD平分?BAC，BP?AD于P，AB=5，BP=2，AC=9。求证:?ABP=2?ACB。
A
P
C D B
4.如图1，?ABC中，AB=AC，?BAC和?ACB的平分线相交于点D，?ADC=130?，求?BAC的度数(
图1
Japan invading army brutality, want to anti-Japanese forces, help young people get a chance to participate in the anti-Japanese, Proposed start "tax class". Communists jindapeng, xiaoxinzheng, who knows his intentions, expressed active support, through "tax class" this position to cultivate reserve force of resistance against Japan. The Inland
5.点D、E在?ABC的边BC上，AB,AC，AD,AE 求证:BD,CE A
C E D B
6.?ABC中,AB=AC,PB=PC(求证:AD?BC
7. 已知:如图,BE和CF是?ABC的高线,BE=CF,H是CF、BE的交点(求证:HB=HC
8 如图,在?ABC中,AB=AC,E为CA延长线上一点,ED?BC于D交AB于F.求证:?AEF为等腰三角形.
9.如图，点C为线段AB上一点，?ACM、?CBN是等边三角形，直线AN、MC交于点E，直线BM、CN交于点F。
(1) 求证:AN=BM;
(2) 求证:?CEF是等边三角形
Japan invading army brutality, want to anti-Japanese forces, help young people get a chance to participate in the anti-Japanese, Proposed start "tax class". Communists jindapeng, xiaoxinzheng, who knows his intentions, expressed active support, through "tax class" this position to cultivate reserve force of resistance against Japan. The Inland
N
M
FE
ABC
10 如图,?ABC中,D在BC延长线上,且AC=CD,CE是?ACD的中线,CF平分?ACB,交AB于F,求证:(1)CE?CF;(2)CF?AD.
11.如图:Rt?ABC中,?C=90?,?A=22.5?,DC=BC, DE?AB(求证:AE=BE(
12.已知:如图，?BDE是等边三角形，A在BE延长线上，C在BD的延长线上，且AD=AC。求证:DE+DC=AE。
Japan invading army brutality, want to anti-Japanese forces, help young people get a chance to participate in the anti-Japanese, Proposed start "tax class". Communists jindapeng, xiaoxinzheng, who knows his intentions, expressed active support, through "tax class" this position to cultivate reserve force of resistance against Japan. The Inland
13.已知ΔACF?ΔDBE，?E =?F，AD = 9cm，BC = 5cm;求AB的长(
Japan invading army brutality, want to anti-Japanese forces, help young people get a chance to participate in the anti-Japanese, Proposed start "tax class". Communists jindapeng, xiaoxinzheng, who knows his intentions, expressed active support, through "tax class" this position to cultivate reserve force of resistance against Japan. The Inland
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