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1、第 12 章全等三角形同步练习班级学号姓名得分一、填空题（每题3 分，共 30 分）1到一个角的两边距离相等的点都在_.2AOB 的平分线上一点M，M 到 OA 的距离为 1.5 cm，则 M 到 OB 的距离为 _.3如图，AOB=60，CDOA 于 D，CEOB 于 E，且 CD=CE，则 DOC=_.4如图，在ABC 中，C=90，AD 是角平分线，DEAB 于 E，且 DE=3 cm，BD=5 cm，则 BC=_ cm5如图，已知AB、CD 相交于点E，过 E 作AEC 及 AED 的平分线PQ 与 MN，则直线MN 与 PQ 的关系是 _6三角形内一点到三角形的三边的距离相等，则这个
2、点是三角形_的交点7ABC 中，C=90，AD 平分 BAC 交 BC 于 D，且 BD：CD=3：2，BC=15cm，则点D 到 AB 的距离是 _8角平分线的性质定理：角平分线上的点_ 9（1）如图，已知1=2，DEAB，DF AC，垂足分别为E、F，则 DE_DF（2）已知 DEAB，DF AC，垂足分别为 E、F，且 DE=DF，则 1_210直角三角形两锐角的平分线所夹的钝角为_度二、选择题（每题3 分，共 24 分）11如图，OP 平分 AOB，PC OA，PDOB，垂足分别是C、D下列结论中错误的是（）APC=PDBOC=ODC CPO=DPODOC=PC12如图，ABC 中，C
3、=90，AC=BC，AD 是 BAC 的平分线，（第 3 题）（第 4 题）（第 5 题）21ABCDEF（第 9 题）ABCDOP（第 11题）精品资料-欢迎下载-欢迎下载 名师归纳-第 1 页，共 5 页 -（第 14 题）DEAB 于 E，若 AC=10cm，则 DBE 的周长等于()A10cm B8cm C 6cm D9cm 13到三角形三条边的距离都相等的点是这个三角形的（）A三条中线的交点B三条高的交点C三条边的垂直平分线的交点D三条角平分线的交点14 如图所示，表示三条相互交叉的公路，现要建一个货物中转站，要求它到三条公路的距离相等，则可供选择的地址有（）1 处 2 处 3处 4
4、 处15给出下列结论，正确的有（）到角两边距离相等的点，在这个角的平分线上；角的平分线与三角形平分线都是射线；任何一个命题都有逆命题；假命题的逆命题一定是假命题A1 个B2 个C3 个D4 个16已知，RtABC 中，C=90，AD 平分 BAC 交 BC 于 D，若 BC=32，且 BD CD=9 7，则 D 到 AB 的距离为（）A18 B16 C14 D12 17两个三角形有两个角对应相等，正确说法是（）A两个三角形全等B两个三角形一定不全等C如果还有一角相等，两三角形就全等D如果一对等角的角平分线相等，两三角形全等18如图，OB、OC 是 AOD 的任意两条射线，OM 平分 AOB，O
5、N 平分 COD，若 MON=，BOC=，则表示 AOD 的代数式为（）A2 B C+D2三、解答题（共46 分）19（7 分）如图，已知 OE、OD 分别平分 AOB 和 BOC，若 AOB=90，EOD=70，求 BOC 的度数EDCBA（第 12题）（第 18 题）精品资料-欢迎下载-欢迎下载 名师归纳-第 2 页，共 5 页 -文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K
6、6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW
7、9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K
8、6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW
9、9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K
10、6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW
11、9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V220（7 分）已知：有
12、一块三角形空地，若想在空地中找到一个点，使这个点到三边的距离相等，试找出该点（保留画图痕迹）21（8 分）如图，点D、B 分别在 A 的两边上，C 是 A 内一点，AB=AD，BC=CD，CEAD 于 E，CFAF 于 F求证：CE=CF22（8 分）已知：如图，在ABC 中，A=90，AB=AC，BD 平分 ABC求证：BC=AB+ADFABECDDBAC精品资料-欢迎下载-欢迎下载 名师归纳-第 3 页，共 5 页 -文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM
13、7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F
14、7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM
15、7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F
16、7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM
17、7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F
18、7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM
19、7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V223（8 分）如图，PB 和 PC 是 ABC 的两条外角平分线求证：BPC=90-12BAC根据第问的结论猜想：三角形的三条外角平分线所在的直线形成的三角形按角分类属于什么三角形？24（8 分）如图，BP 是ABC 的外角平分线，点P 在 BAC 的角平分线上求证：CP 是ABC 的外角平分线PCBADE精品资料-欢迎下载-欢迎下载 名师归纳-第 4 页，共 5 页 -文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2
20、文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3
21、X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2
22、文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3
23、X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2
24、文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3
25、X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2
26、文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2参考答案一、填空题1这个角的平分线上21.5cm 330 48 5MNPQ 6三条角平分线76cm 8到角的两边的距离相等9（1）=（2）=10135 二、选择题11 D 12 B 13D 14D 15B 16C 17D 18A 三、解答题19 5020画两个角的角平分线的交点P 21略22提示：过点 D做DM BC 23略；锐角三角形24提示：过 P作三边 AB、AC、BC的垂线段 PD、PE、PF精品资料-欢迎下载-欢迎下载 名师归纳-第 5 页，共 5 页 -文档编码:CM7S4K6H4M9 HN3X1Z1T
27、6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:
28、CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T
29、6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:
30、CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T
31、6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:
32、CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2文档编码:CM7S4K6H4M9 HN3X1Z1T6F7 ZW9T8I8J5V2