Constraints

By pressing the Constraint button on the toolbar the following pops up with different icons displayed depending on the geometry selected. Once icons gray icons indicate the constraints already placed on the sketch.

The following table lists all the constraint options and a description of each one.

Constraint	Image	Description
Fixed		Makes location of geometry fixed. Lengths are unconstrained
Fully Fixed		Makes location and lengths of geometry fixed
Horizontal		Makes line parallel to sketch's X-axis
Vertical		Makes line parallel to sketch's Y-axis
Constant Length		Makes line have fixed length
Constant Angle		Makes line have fixed angle relative to sketch coordinate system
Collinear		Makes two line segments lie on same axis
Parallel		Makes two lines parallel to each other
Perpendicular		Makes two lines perpendicular to each other
Equal Length		Makes two line segments have the same length
Point on Curve		Makes a point lie on a curve or line
Midpoint		Makes a point lie at the midpoint of a line, not necessarily lie on the line
Concentric		Makes two circles/arcs share the same center point
Equal Radius		Makes two circles/arcs have the same radius
Tangent		Makes a circle/arc tangent to a line,or other circle/arc