Which type of angles add up to 180 degrees?

Which type of angles add up to 180 degrees?

• A. Complementary
• B. Obtuse
• C. Supplementary
• D. Acute

Answer: (C)

The correct answer is the type of angles known as supplementary angles. By definition, supplementary angles are two angles whose measures add up to exactly 180 degrees. This property is fundamental in various geometrical applications and is often used in solving problems regarding angle relationships. For instance, if one angle measures 120 degrees, the supplementary angle would measure 60 degrees because 120 + 60 = 180. This relationship can be useful in various contexts, such as when working with linear pairs of angles formed by intersecting lines. In contrast, complementary angles add up to 90 degrees, so they are not applicable in this scenario. Obtuse angles always measure more than 90 degrees but less than 180 degrees, and acute angles are those measuring less than 90 degrees. Since neither of these types specifically adds up to 180 degrees, they do not fit the criteria of the question. Thus, the relationship of supplementary angles to the sum of 180 degrees makes them the accurate choice in this context.

The correct answer is the type of angles known as supplementary angles. By definition, supplementary angles are two angles whose measures add up to exactly 180 degrees. This property is fundamental in various geometrical applications and is often used in solving problems regarding angle relationships.

For instance, if one angle measures 120 degrees, the supplementary angle would measure 60 degrees because 120 + 60 = 180. This relationship can be useful in various contexts, such as when working with linear pairs of angles formed by intersecting lines.

In contrast, complementary angles add up to 90 degrees, so they are not applicable in this scenario. Obtuse angles always measure more than 90 degrees but less than 180 degrees, and acute angles are those measuring less than 90 degrees. Since neither of these types specifically adds up to 180 degrees, they do not fit the criteria of the question. Thus, the relationship of supplementary angles to the sum of 180 degrees makes them the accurate choice in this context.