【中学受験算数】平面図形・面積・面白い算数問題【難関クラス偏差値up】

2023 3:34
Synopsis
今回の問題は簡単ですが、動画で紹介した方法以外にいろいろと解き方が考えられる問題ですね。 三角形GBDと三角形HCDの ...
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