**Further Interesting Properties
of Cycloids**

Construct two rotating cardioids meeting orthogonally. | |

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¡@ Case 2: |

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Construct a cardioid and a nephroid meeting orthogonally while each rotating with respect to its "center". | ||

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Construct this gear-tooth coupling among a deltoid, an astroid. a cardioid and a nephroid. |

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Given two cardioids sharing the same cusp P, construct the circle passing through P and tangent to both cardioids. |

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Construct this animation displaying a pair of orthogonal cardioids sharing the same cusp. |