How do I dimension an angle?

1. Choose Dimension and click the first line — without point snap, so not at an endpoint.
2. Click the second line. It must not be parallel to the first. Both lines are highlighted, the status bar reads Choose the angle sector with the mouse, then click….
3. Move the pointer around the intersection: the two lines and their extensions form four sectors; the preview shows the angle of the sector the pointer is in. The distance of the pointer from the intersection is the radius of the dimension arc.
4. Click. The angular dimension is placed, Edit dimension opens.

Make the angle driving#

In Edit dimension click 🔒 driving and enter the angle (below 360°). The first chosen line keeps its direction, the second is rotated about the intersection. A fixed line Fixed cannot be rotated; choose it as the first line.

Angles without selectable lines#

If there are no lines, or if they cannot be selected individually — at the bend of a polyline, for instance — dimension the angle from three points:

1. Choose Angle from 3 points from the list of the Annotate group.
2. Click the vertex, then one point on each leg. Point snap binds the points to the geometry so that the angle follows it.
3. Place the dimension arc. The side decides: between the legs the enclosed angle, opposite it the angle over 180°.

This dimension always stays driven; Edit dimension does not open by itself. Details: Angle from 3 points.