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6th Grade Math Angles - Complementary and supplementary angles

Some angles can be classified according to their positions or measurements in relation to other angles. Complementary angles are two angles with a sum of 90º. Supplementary angles are two angles with a sum of 180º. The resources on this page will help you learn how to calculate the complement of an angle, supplement of an angle and the concept of complimentary and supplementary angles.

The apps, sample questions, videos and worksheets listed below will help you learn Complementary and supplementary angles

Sample Questions on Complementary and supplementary angles


Complementary and supplementary angles worksheet


Educational Apps related to Complementary and supplementary angles


Related Topics

  • How do you find the measure of the complement of an angle?
  • The measure of the complement is 12 more than twice the original angle. Find the measure of the angles. The measure of the complement of any angle A is ninety degrees minus the measure of angle A. So if you have an angle that is 20 degrees, then the complement angle measures 70 degrees.

  • How much is a supplementary angle?
  • One clue for remembering the difference between complementary and supplementary angles is to use the alphabet. The letter C comes before the letter S. This concept is linked to the idea that on a circle the 90 degree complementary angle comes before the 180 degree supplementary angle.

  • Are all vertical angles complementary?
  • Vertical angles are two angles whose sides form two pairs of opposite rays. We can think of these as opposite angles formed by an X. The Lesson: In the triangle shown below, the angles A and B are complementary because they have a sum of 90º.

  • How do you find supplementary angles?
  • Two Angles are Supplementary when they add up to 180 degrees. Notice that together they make a straight angle.

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