來(lái)源:中考網(wǎng)整理 作者:中考網(wǎng)編輯 2017-11-14 15:01:54
[全等形]
能夠完全重合的兩個(gè)圖形叫做全等形.
[全等三角形]
能夠完全重合的兩個(gè)三角形叫做全等三角形.重合的頂點(diǎn)叫做對(duì)應(yīng)頂點(diǎn),重合的邊叫做對(duì)應(yīng)邊,重合的角叫做對(duì)應(yīng)角.
[全等三角形的性質(zhì)]
全等三角形的對(duì)應(yīng)邊相等,全等三角形的對(duì)應(yīng)角相等
[找對(duì)應(yīng)邊、對(duì)應(yīng)角的方法]
。1)公共邊是對(duì)應(yīng)邊,公共角是對(duì)應(yīng)角
。2)對(duì)應(yīng)角所對(duì)的邊是對(duì)應(yīng)邊,對(duì)應(yīng)邊所對(duì)的角是對(duì)應(yīng)角
。3)對(duì)應(yīng)角所夾的邊是對(duì)應(yīng)邊,對(duì)應(yīng)邊所夾的角是對(duì)應(yīng)角
。4)最長(zhǎng)(最短)邊是對(duì)應(yīng)邊,最大(最。┙鞘菍(duì)應(yīng)角
。5)平行邊是對(duì)應(yīng)邊,對(duì)頂角是對(duì)應(yīng)角
三角形全等的條件
[邊邊邊]
三邊對(duì)應(yīng)相等的兩個(gè)三角形全等.(SSS)
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