Mathematics
Junior High
這題怎麼解？🙏
")=21
7
主題21 連比例與相似形
(
L₂
(A)
A JPM中, AP>PM,日 4R=an.
如右圖,梯形 ABCD中,E點在 CD上,∠A、∠ABC、∠BEC
AD=6 BC=10 ·
DE
9
.
B
E
110補 20
17
off
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