Complementary Angle
Two angles are Complementary when they 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:
See: Supplementary Angles
- edge
- electronic funds transfer (eft)
- element
- elimination
- ellipse
- ellipsoid
- end point
- engineering notation
- enlarge
- equal
- equal sign
- equality
- equality (sets)
- equation
- equation of a straight line
- equiangular triangle
- equidistant
- equidistant points
- equilateral
- equilateral triangle
- equinox
- equity
- equivalent
- equivalent fractions
- error