There are three types of nodes: cusp, smooth, and symmetrical. The control points of each node type behave differently.

A symmetrical node (item 1), a smooth node (item 2), and a cusp node (item 3).

A symmetrical node (item 1), a smooth node (item 2), and a cusp node (item 3).

Cusp |
The control points of a cusp node move independently from one another. |

A curve that passes through a cusp node can bend at a sharp angle. | |

Smooth |
The control points of a smooth node are always directly opposite each |

other. When you move one control point, the other moves also. The | |

control points of a smooth node may be of different lengths. Smooth | |

nodes produce a smooth transition between line segments. |

Symmetrical The control points of a symmetrical node are always directly opposite each other. Also, the control points are always equal lengths. Symmetrical nodes produce the same curvature on both sides of the node.

Symmetrical The control points of a symmetrical node are always directly opposite each other. Also, the control points are always equal lengths. Symmetrical nodes produce the same curvature on both sides of the node.

Unless a curve changes direction sharply as it passes through a node, changing the node type will not noticeably affect the curve's shape. It will, however, affect the way you can reshape a curve.

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