Mathematics
Junior High
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(2)の解き方を教えてください🙇🏻‍♀️

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✨ Best Answer ✨

貼ったのはわかりますか?

これを使います。
 AD:CD = BA:BC = 4:8 = 1:2
これより、
 AB:DG = CA:CD = (1+2):2 = 3:2
∴ DG = 4 × 2/3 = 8/3 (cm)

いね

理解できました!ありがとうございます!!

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