Question

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求解‼️‼️謝謝

7. 如右圖,梯形ABCD中,
AD || BC
EF | BC
.
AE EB = 5:3 AD = 8,
BC =16,則 EF
=
O
9
8. 如右圖,△ABC中,D、F在AB
上,E在 AC 上,其中 DE || BC
O
EF // CD DF =3 BD = 4,
||
HAF=
9
,
E
B
16
36
XDX
B
D
F
C
E
C
= GH BE
則 CH
=
3. 如右圖
3
DE LA
CE
=
6
(1) 若
||
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