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  5. 這題答案是什麼，求解
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這題答案是什麼，求解

C 4. 如右圖,一平行四邊形的兩條對角線相交成450,且兩條對角線的長分別為 16公分、10公分,則此平行四邊形的面積為多少平方公分? 45°

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✨ Best Answer ✨

Mer
Mer

作高，等腰直角三角形邊長比=1：1：√2，
求出一塊*4就是平行四邊形面積=40√2

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