問題詳情
21. 若四邊形ABCD為一菱形，兩條對角線長分別為6與8，且E、F、G、H分別為其四邊之中點，則有關四邊形EFGH的敘述，何者正確？
(A) EFGH為菱形，周長為
(B) EFGH為菱形，面積為
(C) EFGH為矩形，周長為
(D) EFGH為矩形，面積為12
(A) EFGH為菱形，周長為
(B) EFGH為菱形，面積為
(C) EFGH為矩形，周長為
(D) EFGH為矩形，面積為12
參考答案
答案：D
難度：計算中-1
書單：沒有書單，新增
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