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What Are Complementary and Supplementary Angles?

James H. Sterling • • 5 min read
What Are Complementary and Supplementary Angles?

Complementary angles

Complementary angles
Two angles are called complementary if their measures add to 90 degrees, and called supplementary if their measures add to 180 degrees. ... For example, a 50-degree angle and a 40-degree angle are complementary; a 60-degree angle and a 120-degree angle are supplementary.
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add up to 90° - example: 15° & 75° are complementary. (added together, they form a right angle) -and- Supplementary angles add up to 180°

What are supplementary angles?

: two angles or arcs whose sum is 180 degrees.

What is complementary angle with example?

Complementary angles are pair angles with the sum of 90 degrees. ... Common examples of complementary angles are: Two angles measuring 45 degrees each. Angles measuring 30 and 60 degrees.

James H. Sterling
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James H. Sterling

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.