1.正方形
2。两个并连的等腰三角形
3。顶边和腰相等的等腰梯形,对角线和底边相等,(底角=72度)
4。等边三角形,中点连向三个顶点
5。中位线和半腰相等的等腰三角形
6。边长和一对角线相等的菱形,连上另一条对角线
1.正方形
2。两个并连的等腰三角形
3。顶边和腰相等的等腰梯形,对角线和底边相等,(底角=72度)
4。等边三角形,中点连向三个顶点
5。中位线和半腰相等的等腰三角形
6。边长和一对角线相等的菱形,连上另一条对角线
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