Mathematics
Junior High
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この3つの求め方教えてくださいᐡ ̳× ̫ × ̳ᐡ
下の図で, DE // BC とするとき, x, yの値を求めなさい。
0
(1)
(3)
B
15 D
-12-
6
Y
A
X
E
C
(2)
C
B
3
A
3-
`x.
E
12.5
D
A
E
y
C
X
10
80: CA 34ES D
15
D5-B
→ p.248 72
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