The key to precise sketching and modeling is dimensions. Any sketch or body you create will have a dimension label attached to it. You can select the sketch and then the dimension label, and adjust the value in the numpad.

These are the dimensions:

**Length**

The length of a line.

You can also change the distance between two points by selecting them and entering the desired length (absolute, horizontal, or vertical).

You can also change the distance between a point and a line.**Radius**

The radius of a circle or arc.**Angle**

The angle of an arc or the angle between two connected curves.

To change the angle between two connected curves, select the two arcs or lines.