# Dimension

Apply and edit a dimensional constraint to control the size and proportions of a sketch. You can make a dimension "driven" so that it's a regular dimension, not a constraint.

## Apply a Dimensional Constraint to a Sketch Curve

Constrain the length of a line, the distance between two points, an angle, or the size of an arc or circle.

## Edit a Dimensional Constraint

Reposition a dimensional constraint, change the value, make it "driven," or delete it.