三角形 - (04)認識銳角三角形、直角三角形和鈍角三角形
Synopsis
國小中年級數學教學，本影片在說明什麼是銳角三角形、直角三角形和鈍角三角形。
![實力數學教室 400701[國小四上] 第七章 三角形1](https://i.ytimg.com/vi/_ZVVVJxQBIk/hq720.jpg?sqp=-oaymwEcCNAFEJQDSFXyq4qpAw4IARUAAIhCGAFwAcABBg==&rs=AOn4CLDThr_GRDdyzUxy9kc5R50z4EyVbA)
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