What are complementary and supplementary angles ?

Complementary angles:

The angle that is added to another angle to make the sum 90 degrees is called a complementary angle.

For example,

The complementary angle of 20 is 70 and similarly,

The complementary angle of 40 is 50.

Supplementary angles:

The angle that is added to another angle to make the sum 180 degrees is called a supplementary angle.

For example,

The supplementary angle of 20 is 160 and similarly,

The supplementary angle of 140 is 40.

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Updated on: 10-Oct-2022

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