Let's say you have two angles, each one is 45 degree. If you add them up and the sum is 90 degree then those angles are Complementary angles.

Consider few more examples

70 degree and 20 degree

35 degree and 55 degree

10 degree and 80 degree

all above are Complementary angles as the sum of both is equal to 90 degree or right angle.

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Watch our other videos on Angles

Types of Angles

Types of Triangles

What are congruent Angles

What are Complementary Angles

What are Supplementary Angles

What are Vertical Angles

What are Adjacent Angles

What are Corresponding Angles

What are Alternate Exterior Angles

What are Alternate Interior Angles

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What are Complementary Angles - 7th Grade Math

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