[請益] 不能拼成哪種圖形?
用四個全等直角三角形(不等腰)
不可能拼出什麼圖形?
(A)正方形
(B)菱形
(C)箏形
(D)等腰梯形
答案為(A)
(B)(D)選項都沒問題
為何箏形可以?= ="
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