10. 如圖(三),在梯形ABCD中, , LA=90°, =5, =13。若作的中垂線恰可通過B點,則 =?(A)8(B)9(C)12(D)18

問題詳情

10. 如圖(三),在梯形ABCD中,

, LA=90°,

=5,

=13。若作

的中垂線恰可通過B點,則

=?
(A)8
(B)9
(C)12
(D)18

參考答案

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