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课程 4 · 年级 2–4
Geometry: shapes
📖 课程
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🎯 测验——选择翻译
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✅ 本课已完成
Geometry studies shapes and their properties. A triangle has 3 corners, a square has 4 equal sides and right angles.
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圆形
⬛
正方形
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三角形
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长方形
⬠
五边形
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菱形
💡 The angles of a triangle always add up to 180° — check it with a protractor!