Dimensions
Use the Dimensions tab to add measurement and coordinate annotations.

Linear
Adds a horizontal or vertical distance dimension between two definition points.
Aligned
Adds a distance dimension aligned with the direction between two definition points.
Radial
Adds a radius dimension to a selected circle or arc.
Diametric
Adds a diameter dimension to a selected circle or arc.
Angular
Adds an angle dimension for supported lines or arcs.
Ordinate H.
Adds a horizontal ordinate coordinate dimension at the chosen point.
Ordinate V.
Adds a vertical ordinate coordinate dimension at the chosen point.
Vertex
Starts a repeated coordinate-annotation command; it is not a visibility toggle. Pick vertices to place X/Y coordinate labels and finish with Esc or right-click.