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Angle of degree 90

Angle Degrees 90

Angle of degree 90

Illustration of complementary angles. Two angles whose sum is a right angle.

Complementary Angles

Illustration of complementary angles. Two angles whose sum is a right angle.

"Any two colors standing opposite each other are complementary to each other. If such colors are blended, the resultant is white light; if any two alternate color are blended, the resultant will be the color that appears between them in the figure." — Avery, 1895

Complementary color wheel

"Any two colors standing opposite each other are complementary to each other. If such colors are blended,…