Mathematics
Junior High
Resolved
入試の一部の問題の中の考え方なんですけど、
写真で載せたようになるのはなぜですか
そもそもこれは成立しますか
曖昧ですがわかる人教えてください
b
A
3
B
C
ADBC = ABC
BABC 3
B
x3
9 D 4
3cm
A
B
C
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