Draw arcs and circles

Choose Draw arc or circle from the left tool rail. Click the center, then click a point on the circle to set its radius. Enter a radius in the tool dimension field before setting that point when you need a precise size; the displayed unit follows Settings. Move the pointer to choose the arc endpoint and click to finish. Returning to the start point creates a full circle. Press Escape to cancel an unfinished arc.

Use snap cues to place endpoints on existing points or geometry. A circle can make a closed boundary or an inner loop for a hole. An arc can join other curves in a boundary, but the complete boundary must close before it can define a face.

If the circle or arc is the wrong size or position, undo and redraw it, or edit the supported geometry in Sketch Edit. Learn how to turn boundary curves into a surface in Create a face.