Mathematics
Junior High
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角ABCと角BCDの答え教えてください!
さ、角度を求めなさい。
(2)
A
·60⁰°
B16cm C
AD=
20cm
平行四辺形ABCD
LABC=
60°
D
16cm0=10cm
∠BCD=
“あるとき、面積が等しい三角形の
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