Radical axis

Draws the line of points that have equal power for two circles. Ruler and compass only.

All parts

Part 1 of 2: Mark the two crossingsStep 1 of 1Pencil

c1 and c2 cross. Mark the two places where they cross. Call them X and Y.

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