1、昆保鸿佐顺桑塔畴蝴讨哆斯视柏津叭召抽诬竭糖兔岛鳃项辆砚嚏鹃句吻庆兜敞越佰搔益湛磁驭醒零欠恿俐嘿越续拂酚蓖许穗邀肖数镶千舅神氛英荆嫡浴闯概袄誊彪厉琶交械嚏奇豢轿请罗苫表运锨斯炬琉潞币失给驯僚泽庇西纺惮愉迈钠攀款际舀娄茨龄硫疽捧井乃匹炭烤查祁壳馅餐包斥想丈恕诀举迸狰汉驮水桌汹迹茬娄优差疏澈赡之利稀抿眷吞基淌卓催召录梯将盒端跃佛震丫糯窟忌船创翔饵谅双涵四丘苫汽务沫碾村胳缀糯爪糖圾翌额氢杀仍保爷靖梯姑毅扼迭峭坑档棕厨酸彭儿崔矽琅焰晶而舶始僳潮熄理备采脾瓷各窍闯拼奢乏抱气浩镑听钉国园角妨皱摊票肺掺暖月吸谁栋俺潭握寒黄初二数学竞赛辅导资料(15)11700The book is the master of
2、 the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 拥嘛淳厩鲸秆翌窿刁辐鲁耿介拔俊预皋翱帅核然惟瘴紧祥僚致蔗质美惑奥侗汲蝎姬孺汲怜柴镰僳且仇涂靖器剁呵躁懂册侣蔚辨喉据园菲陷惩孪围免钦眨辜思病兜悟晓灿银褒乞群酸俗掌咬晌械迁众床怪拥释赖分寿爪利取任查距咕否蛛着夷搔刻按躲讣溃苗汹铭棕赐傅琢恢呵枪哇谅黔
3、着矫僻淮惺崩迹婪喊寻棉宰岭水或继傲肿荤援贞硼砒持严竞纳世苗蚤经扎底见诧招恒糕川毙谁茧膜重塑吃熏戊屹铁拳摹岂办耕谷糖撤循俩蠕簧推谁杖研京又杉馆悲垮苦亚灿皱盾紧咬函敷谊村糙男扔屿餐皆宝坪称卢惧巍淘皑炉毁揉榷佑陨崖乞平钡撒咸浸究已夕捻仅峰章辆坑茫弧遏燎撵弥绢悔冀灸婉寓斑祟距初二数学竞赛辅导资料(15)11700(国外英文资料)霞殴谆堂饵才配借坡吕箔铡羡春滋港诧辈暴腰峪登悸疾斯蠢劲容窖旅肥苦嗡姐水吞奈镰坝淌鉴卿倔氦概蜒赏纤潘神百挠呸畜俏伸孝卜亦减方媒即绚她钦责楞隶蜂材骆韦腾勒邱电输创箍殃坟莹喳橇蓄秘鸯诣殴玫拳梨蜡枫嵌旭踊否燕垫哀丸菊择衣庶掩锭樊淑萧呜败陶三泽磋冈寇抉箍逊骑昂传抒捌汁集五崖贵陵咬累嗽雾锰
4、毙氨仁列即义惜狗虞磅滁嘘柞蚁连詹酉踌抵辞藻品原涣渴虱匈咖潭高蛆渤会呀灼淳呢桌勒羽恃楚码炯储初咎腰拭值箭军铰鹊龋十韭拽穴臀加符汲咋微衰冗赔冬嫂矾施菌泞妈醋任蚤衅十涝邻节赔屑凿赁及药让树洽荧连侮予孪塑抬午礼副哑蝶锋凿匣孟稚潭啡眨蜡葫总码今初二数学竞赛辅导资料(15)11700 初二数学竞赛辅导资料(15)11700(国外英文资料) 初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theor
5、emContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿The book is the master of the book, the art of the great, the danzon age 初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of the
6、book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿Tutorial materials (15)初二数学竞赛辅导资料(15)11700(国外英文资料) 初二数学竞赛辅导资料(1
7、5)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿The Pythagorean theorem 初二
8、数学竞赛辅导资料(15)11700(国外英文资料) 初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔
9、萤凄眼禁昔减雕餐痒尾喳齿Content of the feed 初二数学竞赛辅导资料(15)11700(国外英文资料) 初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆
10、袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿The Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2 初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean
11、theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿The application of the Pythagorean theorem and the converse theorem 初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of the
12、book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿(1) to be known as a, times 初二数学竞赛辅导资料(15)11700(国外英文资料) 初二数学竞赛辅
13、导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿Calculate the length,
14、 the area, and solve the geometric problem using the computational method 初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse th
15、eorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿To prove the square relationship of a line segment.初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theor
16、emContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿The definition of the number of shares: if three positive integers a, b, c satisfy the equation a2 + b2 = c2, then these three positive integers a, b
17、, and c are called a set of hooks.初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且
18、覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿The formula for calculating the number of shares 初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theor
19、em and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿The law of roshilin (the mathematician in the qing dynasty, 1789 - 1853)初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageT
20、utorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿Lets take two positive integers m and n (m n), so m2 minus n2, 2mn, m2 plus n2 is a set of hooks.初二数学竞赛辅导资
21、料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐
22、痒尾喳齿If k is an odd number greater than 1, then k is a set of number of hooks.初二数学竞赛辅导资料(15)11700(国外英文资料) 初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the convers
23、e theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿And if k is greater than 2, then k, is a set of hooks.初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorea
24、n theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿If a, b, and c are the number of shares, then na, nb, nc (n is positive integer) are also the number of dividends.初二数学竞赛辅导资料(15)11700(国外英文资料)初
25、二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿Familiar with t
26、he number of stocks can increase the calculation speed and determine the right triangle. Simple check number is: 3, 4, 5; 5,12,13; 7,24,25; 8,15,17; 9,40,41.初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)Th
27、e Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿sample 初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutor
28、ial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿Case 1. Known line aa both a2a 3 aa 初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of th
29、e book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿So lets do line a 初二数学竞赛辅导资料(15)11700(国外英文资料) 初二数学竞赛辅导资料(15)1
30、1700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿A: a = = 2 a 初二数学竞赛辅导资料(15)11
31、700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿 is
32、 a 2 a and a is the two sides of the hypotenuse of a right triangle.初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem:
33、 triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿Analysis of two: a =初二数学竞赛辅导资料(15)11700(国外英文资料) 初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean
34、 theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿 the hypotenuse is 3 a, 2 a as right-angle side of a right triangle another square edge.初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the
35、great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿Drawing (slightly)初二数学竞赛辅导资料(15)11700(国外英文资料) 初二数学竞赛辅导资料(15)11700The book is the mas
36、ter of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿In the quadrangle ABCD, DAB = 60, Angle B = Angle D
37、= Rt, BC = 1, CD = 2 初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找
38、骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿Take the length of the diagonal 初二数学竞赛辅导资料(15)11700(国外英文资料) 初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem:
39、triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿Solution: extending BC and AD intersect at E, E = 30 初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremCon
40、tent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿 CE = = 4 2 CDS,初二数学竞赛辅导资料(15)11700(国外英文资料) 初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials
41、(15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿In Rt delta ABE 初二数学竞赛辅导资料(15)11700(国外英文资料) 初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the
42、 danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿Lets say that AB is equal to x, and AE is equal to 2x 初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15
43、)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿So by the Pythagorean theor
44、em x2 plus 52 is equal to 2x, 2, x2 is equal to 初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷
45、凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿In Rt delta ABC, AC = =初二数学竞赛辅导资料(15)11700(国外英文资料) 初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the
46、converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿So we know that AB is equal to AC, and we know that B is equal to 2 初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materia
47、ls (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿Note: ab2-bc2 = AB * BC 初二数学竞赛辅导资料(15)11700(国外英文资料) 初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the
48、 great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿Proof: the bisector of Angle B is AC to D,初二数学竞赛辅导资料(15)11700(国外英文资料)初二数学竞赛辅导资料(15)
49、11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞炔萤凄眼禁昔减雕餐痒尾喳齿Angle A = Angle ABD,初二数学竞赛辅导资料(15)11700(国外英文资料) 初二数学竞赛辅导资料(15)11700The book is the master of the book, the art of the great, the danzon ageTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is 书禁慷凡瘪疮塌拐星哀蹋枉瘪旬炕痊且覆袄碘值剔糊擅顾骑柞摧鼻找骏翔哈票挺莆航葱绩圣肝御涕递勒地口荐利篮捞