Arcs, beziers & segments

Polylines and polygons are made of segments. With the Select tool, you can edit each one after the fact.

• Drag a vertex to move it; the adjoining segments follow. Clicking a vertex never nudges it — a drag starts only after deliberate movement.
• Right-click a vertex for Delete Vertex, or right-click a segment for Add Vertex — see the right-click menu.
• Delete / Backspace with a vertex selected also removes it.
• Convert a line to an arc, then drag the arc or set its radius numerically.
• Bezier segments expose handles you can drag to adjust curvature.