7.9
正方形,矩形,梯形,三角形,椭圆等的Area Formulas 。
这个自由的几何应用显示最重要的Area Formulas :对于正方形,矩形,梯形,三角形,椭圆等。
学校和大学的最佳数学工具!如果您是学生,它将帮助您学习几何形状!
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