Angles that add up to 90 degrees (a Right Angle).
They don't have to be next to each other, just so long as the total is 90 degrees.
Examples:
• 40° and 50° are complementary angles.
• 60° and 30° are complementary angles.
• 5° and 85° are complementary angles.
Try dragging the points below:
../geometry/images/geom-comp-supp.js?mode=comp