Invert in a circle

Inverts a point, a full line or a full circle in a circle. Ruler and compass only.

All parts

Part 1 of 4: Tangents from P (1 of 2)Step 1 of 8Compass

Find where the tangents from P touch c1. Put the point of your compass on P.

Keys: left and right arrows step, Space plays or pauses, Escape goes back to all constructions.