中点

快捷方式：shift+m

步骤

1. 选择直线和点，或选择圆弧和点。
2. Click the Midpoint icon ( ).

该点将约束为线或圆弧的中点。

To place a point at the midpoint of two other points on a line:

1. Select the start point.

2. Select the end point.

3. Select the point between the start and end points (the midpoint).

   

   The start (left) and end (right) points are selected first, then the middle point is selected (shown under the cursor)

4. Click the Midpoint icon () on the toolbar.

The third point is constrained to be equidistant between the start and end points:

将一个点约束为一条线或一个圆弧的中点。

1. 选择一个点以及一条直线或一个圆弧。
2. 选择编辑外观

该点将约束为线或圆弧的中点。