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17.如右圖,菱形ABCD中,P、Q、R、S分別為各邊的中點,若∠A=60°,∠B=120°,且邊長為10,則四邊形PQRS的周長為何? (A)25(B)5+10√3(C)10+10√3(D)10+
問題詳情
17.如右圖,菱形ABCD中,P、Q、R、S分別為各邊的中點,若∠A=60°,∠B=120°,且邊長為10,則四邊形PQRS的周長為何?
(A)25
(B)5+10√3
(C)10+10√3
(D)10+10√2
參考答案
答案:C
難度:
適中
0.55
書單:
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用户評論
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許學君
】評論
因為∠A是60°所以ΔAPS和ΔCQR是★★★★...
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