Final answer:
Complementary angles are two angles whose measures add up to 90 degrees. This means that if one angle measures 30 degrees, its complement would be 60 degrees, because they sum to 90 degrees.
Step-by-step explanation:
In the subject of mathematics, specifically geometry, complementary angles are two angles that add up to 90 degrees. Grasping this concept allows you to understand how angles are related and how they interact within various geometric figures. For instance, if you have one angle that measures 30 degrees, its complement is 60 degrees because 30 + 60 equals 90, confirming it fits the definition of complementary angles.
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