Understanding Complementary Angles | Definition and Examples

Complimentary Angles

Complementary angles are two angles that add up to 90 degrees

Complementary angles are two angles that add up to 90 degrees. In other words, when you have two angles that are complementary, the sum of their measures is equal to a right angle.

For example, let’s say we have an angle A that measures 30 degrees. The complementary angle to angle A would be angle B, which measures 60 degrees. When you add the measures of angle A and angle B (30 + 60), you get a total of 90 degrees.

Another example would be angle C, which measures 45 degrees. The complementary angle to angle C would be angle D, which measures 45 degrees as well. When you add the measures of angle C and angle D (45 + 45), you again get a total of 90 degrees.

Complementary angles can be found in many different situations. For instance, in a right triangle, one of the angles is always 90 degrees, and the other two angles are complementary. Similarly, if two lines intersect, the angles formed on the opposite sides of the intersection are also complementary.

It’s important to note that complementary angles don’t have to be adjacent angles or even in the same shape or figure. The only requirement for angles to be complementary is that their sum equals 90 degrees.

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