what is a compimentary line in math?

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http://astronomyonline.org/Science/Geometry.asp

In mathematics, a complimentary line refers to a pair of angles that add up to 90 degrees. When two lines intersect, they form four angles around the intersection. Two of these angles are considered to be complimentary if their measures add up to 90 degrees.

In mathematics, a complementary line refers to a pair of angles that add up to 90 degrees. This concept is commonly used in geometry when studying angles.

To understand this concept further, you can visit the website provided (http://astronomyonline.org/Science/Geometry.asp) which provides information and explanations about geometry, including complementary angles. Additionally, you can consult your math textbook or class notes for specific examples and practice problems related to complementary lines.