圆锥侧面展开图动态演示
2019-04-05 03:41
本范例动态演示圆锥侧面展开为扇形的几何过程。通过旋转、正交平面与截面等构造，展示三维圆锥体如何沿母线剪开并展平为二维扇形。核心演示内容包括：圆锥底面圆周长与展开扇形弧长的等量关系、母线长度与扇形半径的对应关系、以及扇形圆心角的计算。适用于江苏省对口单招立体几何复习，帮助理解空间图形与平面图形的转化，强化圆锥侧面积公式的几何直观推导。
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