圓內接等邊三角形和正六邊形 Equilateral Triangles and Regular Hexagons Inscribed in Circles
拖拉以下兩幅圖形的點，看看動態效果有甚麼不同。
你能構作這兩幅圖嗎？
Drag the points in the two figures below to see the effects.
Can you construct these two figures?
課業 Task
構作以下的正六邊形，並啟動動畫。
Construct the following regular hexagon and start the animation.