Angles: Complementary and Supplementary Concepts

The video tutorial explains complementary and supplementary angles. Complementary angles add up to 90 degrees, while supplementary angles add up to 180 degrees. The instructor provides examples using right angles and straight angles, and discusses how these concepts apply to polygons like parallelograms. The lesson concludes with a brief summary and encourages viewers to try practice problems.

What is the sum of complementary angles?

• 180 degrees

• 360 degrees

• 45 degrees

• 90 degrees

If one angle is 35 degrees, what is its complementary angle?

• 75 degrees

• 65 degrees

• 55 degrees

• 45 degrees

Which of the following pairs of angles are complementary?

• 30 and 60 degrees

• 90 and 90 degrees

• 45 and 45 degrees

• 60 and 120 degrees

What is the complementary angle of 40 degrees?

• 70 degrees

• 60 degrees

• 50 degrees

• 40 degrees

Which of the following is true for complementary angles?

• They are always different

• They add up to 180 degrees

• They add up to 90 degrees

• They are always equal

In a right triangle, what is the sum of the two non-right angles?

• 180 degrees

• 270 degrees

• 90 degrees

• 45 degrees

In a right triangle, if one angle is 30 degrees, what is the other non-right angle?

• 60 degrees

• 30 degrees

• 90 degrees

• 45 degrees

What is the sum of supplementary angles?

• 45 degrees

• 90 degrees

• 360 degrees

• 180 degrees

If one angle is 120 degrees, what is its supplementary angle?

• 60 degrees

• 150 degrees

• 90 degrees

• 30 degrees

In a parallelogram, what is the sum of two adjacent angles?

• 360 degrees

• 180 degrees

• 90 degrees

• 45 degrees