Construct an animation displaying the deltoid sliding inside a fixed nephroid.

建构一动态绘图:展示三角线沿著一固定的肾脏线内部滑动.

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Construct rotating cardioid and nephroid while remaining orthogonal to each other.

作旋转的心脏线和旋转的肾脏线,且彼此维持正交.

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Construct an animation displaying a nephroid sliding along three fixed concurrent lines meeting at 120 degrees.

建构一动态绘图.展示肾脏线的滚动,沿著共点及间隔120度的三条直线.

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