Just like adding normal numbers.
Example : 160 degrees + 40 degrees = 200 degrees
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Yes. Complementary angles are angles that add up to 900 .
complementary angles are 2 angles that add to 90 supplementary are 2 angles that add to 180
explementary angles add up to 360 degrees supplementary angles add up to 180 degrees complementary angles add up to 90 degrees
The interior angles of a triangle add up to 180o. The interior angles of a square add up to 360o. Other shapes have other angles.
Supplementary angles add up to 180 degrees