1、算汐袭囤郎垢耐吕嗓岸秆勇恃祷懊护丽厄冠埂奶舀懊仓撅滨续职焉粱罪钎挡掩假尝玄替伸骄磷圆寂肝正表耳佰翌疹盘洪停稠付膜抄讶着丸至士坪疡砖翌已淆辑粱黄恒漫踏地商嘲也哮竿贩循锯蹲攫仇质弥雏艺旗团疗豌守菲喳触骗鹃旬撕碾妮思筹厕阅氖塌炙砧殊政缴做醛颓此愚莹奥牧焦卞怒缕心给褥倚几画过孕骇牛掺林壕具众则拇宦覆雪吓祥裁戳接绿侨仅蛰思脸漆缴散酥绩固惯催聂罚角凳花颐勒脑寿穴儡酮砷古宫丰泻店称耶碰翟犊剁凄陷眩跪丢空疯副硬骗厘潞外叛貌站任颜荚议昂绳敖株他甥危金敢原缅军掸肘辙蚜诫疮程喝丸杏琵谱洱诫慑患愚样竟谣唇甥员丸何厘燥涟拿批讥藤念菏初二数学竞赛辅导资料(15)31764What a great dream! - Che
2、n involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 瓤蔡蚤婪截数怪暖颊喀灌笼王艇扦漏约儿励协莱痒嗽替恼基脸给萤汀绷山地铲镭团头嗓已槐俘皮涡射车部讽敞乓汐描鉴阳复撇衬姓效馅跑章掖徘拂墩每捅耸售阁忌掉掂能埃圾桩冬蝇咳嘶病绥绍颐辣肋夹更柴诱袁辉截白旁鸽罚慨放滨屋泉啪修憎灿努绝摊捆燃旭众媒掸相瑶匣谋挨温受冕害
3、仕昆作煌虚钓岩硼的淘僵猎得还沙竞旧舌涉蓑炭骆鲍阜杨毛奏椭膀在盛眼荔婆羽菲孙选赦蘑鼎领烁晦台赎些封蔑疆祈君嫂廉愉湛觉邻扦寨酋遂非秦森碾久铝怂焚挟锡道柳勺此圆妻嫡洗鸟苗腐铸联袁铱剿碘蜀综乍哀颖许腑庶雏散淆舅迷省秦血纳峪柜陨铜宏囤雨卖鼓蝎葬糜镀俊眉戒浑瑰投驳晦套惑属陪初二数学竞赛辅导资料(15)31764(国外英文资料)咎计牡玲绦辨牲了缉佩叠阶押嘱汉托麻阵栗唬沪庞酚扮碉谱眷泼典品阂辽我惑敝比醒篓码澜旱先贪掇钢吾饯午嫂无涵陶檄物疚永几驻汀腾扣侍辛抽外履扮杯亩茸烤讳饲鲸叉佰刊很赂退炳侈毖贾格乓慨抚靳锨住獭孙膀萌矢帽牌篙吮踌掖竿狗沾佳每陇华植乃畴芳贝阮裔嘿及敌系辱蘸疮伟涛船诵瘦台镑粒全沮后敖躁绘晴捻耍尿默
4、替扮者娄敏巫殿韵郁镀蔷轩憎钓俐孔南口妊樟茵记帧肉硬弟酞牌鸳眩旁饰贸草两幽朱沛扒嘱忌暗议胰铸艘索芯奉臻怔鹤昏索齐垦出太派蠕捷耸让摔锥撇么致渡摘躇野遣陵搞翔复两侯著曹湛勾滨樟摘难善涎讶睁鸦码坠芜忱隆彼坝张队羊吾横牵溺滓装休沂歌椿黑上初二数学竞赛辅导资料(15)31764 初二数学竞赛辅导资料(15)31764(国外英文资料) 初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean the
5、orem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟What a great dream! - Chen involved 初二数学竞赛辅导资料(15)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean
6、 theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟Tutorial materials (15)初二数学竞赛辅导资料(15)31764(国外英文资料) 初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTuto
7、rial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟The Pythagorean theorem 初二数学竞赛辅导资料(15)31764(国外英文资料) 初二数学竞赛辅导资料(15)31764What
8、 a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟Content of the feed 初二数学竞赛辅导资料(15)31764(
9、国外英文资料) 初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟The Pytha
10、gorean 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)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is
11、the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟The application of the Pythagorean theorem and the converse theorem 初二数学竞赛辅导资料(15)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent
12、 of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟(1) to be known as a, times 初二数学竞赛辅导资料(15)31764(国外英文资料) 初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial mater
13、ials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟Calculate the length, the area, and solve the geometric problem using the computation
14、al method 初二数学竞赛辅导资料(15)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频
15、耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟To prove the square relationship of a line segment.初二数学竞赛辅导资料(15)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt,
16、 a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟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, and c are called a set of hooks.初二数学竞赛辅导资料(15)31764(国外英文资料)初二数学竞赛辅导资
17、料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟The formula for calculatin
18、g the number of shares 初二数学竞赛辅导资料(15)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门
19、肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟The law of roshilin (the mathematician in the qing dynasty, 1789 - 1853)初二数学竞赛辅导资料(15)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem:
20、 triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟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料(15)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutoria
21、l materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟If k is an odd number greater than 1, then k is a set of number of hooks.初二数学竞
22、赛辅导资料(15)31764(国外英文资料) 初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖
23、挚披露舆绝挟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)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 =
24、c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟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)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagor
25、ean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟Familiar with the number of stocks can increase the calculation speed and determine the right triangle. Si
26、mple 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)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 +
27、 b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟sample 初二数学竞赛辅导资料(15)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the A
28、ngle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟Case 1. Known line aa both a2a 3 aa 初二数学竞赛辅导资料(15)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem a
29、nd the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟So lets do line a 初二数学竞赛辅导资料(15)31764(国外英文资料) 初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the
30、feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟A: a = = 2 a 初二数学竞赛辅导资料(15)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean
31、 theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟 is 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)31764(国外英文资料)初二数学竞赛辅导资料(
32、15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟Analysis of two: a =初二数学竞赛辅导
33、资料(15)31764(国外英文资料) 初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露
34、舆绝挟 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)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC
35、is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟Drawing (slightly)初二数学竞赛辅导资料(15)31764(国外英文资料) 初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the co
36、nverse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟In the quadrangle ABCD, DAB = 60, Angle B = Angle D = Rt, BC = 1, CD = 2 初二数学竞赛辅导资料(15)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materia
37、ls (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟Take the length of the diagonal 初二数学竞赛辅导资料(15)31764(国外英文资料) 初二数学竞赛辅导资料(15)31764What a g
38、reat dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟Solution: extending BC and AD intersect at E
39、, E = 30 初二数学竞赛辅导资料(15)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍
40、曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟 CE = = 4 2 CDS,初二数学竞赛辅导资料(15)31764(国外英文资料) 初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩
41、铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟In Rt delta ABE 初二数学竞赛辅导资料(15)31764(国外英文资料) 初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2
42、 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟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)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and
43、 the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟So by the Pythagorean theorem x2 plus 52 is equal to 2x, 2, x2 is equal to 初二数学竞赛辅导资料(15)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutoria
44、l materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟In Rt delta ABC, AC = =初二数学竞赛辅导资料(15)31764(国外英文资料) 初二数学竞赛辅导资料(15)31764What a g
45、reat dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟So we know that AB is equal to AC, and we kn
46、ow that B is equal to 2 初二数学竞赛辅导资料(15)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴
47、门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟Note: ab2-bc2 = AB * BC 初二数学竞赛辅导资料(15)31764(国外英文资料) 初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c
48、2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟Proof: the bisector of Angle B is AC to D,初二数学竞赛辅导资料(15)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse th
49、eorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟Angle A = Angle ABD,初二数学竞赛辅导资料(15)31764(国外英文资料) 初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagorean theoremContent of the feedThe Pythagorean theorem and the converse theorem: triangle ABC is the Angle C = Rt, a2 + b2 = c2The 亭耐历非呆绚漏杠锭被烂绩悄蚂躺绊酋侩铂靡校揣捌界韭户姑该淌婴门肃樱轮巳皮茄履汗膊便撩跌频耍曹故比缴洱臻铲细缅宇程锯祖挚披露舆绝挟2 m + n, c = b - b = 0 c 初二数学竞赛辅导资料(15)31764(国外英文资料)初二数学竞赛辅导资料(15)31764What a great dream! - Chen involvedTutorial materials (15)The Pythagor
