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繡曲線 Curve Stitching

重覆點擊 ▶▶ 鈕,看看如何構作以下圖形。 根據老師指示,構作這個圖形。 Click the button ▶▶ repeatedly to see how the following figure is constructed. Construct this figure according to the teacher's instruction.

使用代數指令構作以下繡曲線圖形。Construct the following figures with algebraic commands.