Mathematics
Junior High
Resolved
解説して欲しいです。
1. 右の図で,四角形 ABCD は平行四辺形, EF //AC
のとき, AFC と面積の等しい三角形を図中の記号
を用いてすべて書け。
AB
B
E
F
D
1. ADFC, AAEC, AAED
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