【中学受験算数】平面図形・直角二等辺三角形の折り曲げ・面白い算数問題【難関クラス偏差値up】

2023 4:40
Synopsis
直角二等辺三角形の折り曲げの問題です。問題そのものはそんなに難しくはないのですが、方針を間違えると泥沼にはまりそうな ...
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