What are supplementary angles

The video tutorial explains supplementary angles, which are two angles whose measures add up to 180 degrees. It introduces the concept of opposite rays and how they form lines, leading to the creation of angles. The tutorial distinguishes between supplementary and adjacent angles, emphasizing that while adjacent angles can be supplementary, they don't have to be. It also covers linear pairs, which are two adjacent angles formed by opposite rays that are always supplementary. The video concludes by reinforcing the understanding that while all linear pairs are supplementary, not all supplementary angles are linear pairs.

What is the sum of the measures of two supplementary angles?

• 45 degrees

• 360 degrees

• 180 degrees

• 90 degrees

What do opposite rays form when they meet at a point?

• A triangle

• A line

• A circle

• A square

Which of the following is true about adjacent angles?

• They are always equal

• They must always be supplementary

• They share a common vertex and side

• They must always be complementary

What is a linear pair?

• Two adjacent angles that are supplementary

• Two angles that form a triangle

• Two angles that add up to 90 degrees

• Two angles that are equal

Which statement is true about linear pairs and supplementary angles?

• All supplementary angles are linear pairs

• All linear pairs are supplementary angles

• Linear pairs are never supplementary

• Supplementary angles are always adjacent