Question

Eason

求解

1*X=3**
**+ 4 = 36-12x+* 1×× = 3 x x = 1/2 + 1/4 = 4
3. 如右圖,已知ABCDE與EFGHI皆為正五邊形,則
LAJI=72度。 362
185-209_1
=
36×3
= 108°
AMAZ
=
B
C
Po
DA
H