Master finding the missing angle measure using complementary angles

The video tutorial explains how to solve for X and find missing angle measures using complementary angles. It covers several examples, including basic complementary angles, expressions, and quadrilaterals. The tutorial emphasizes setting up equations and solving for X, ensuring the sum of angles equals 90 degrees. It also highlights common mistakes and provides strategies for rearranging variables to simplify equations.

What is the sum of two complementary angles?

• 180 degrees

• 90 degrees

• 45 degrees

• 360 degrees

If angle X is 37 degrees, what is the measure of its complementary angle?

• 53 degrees

• 37 degrees

• 45 degrees

• 90 degrees

In the equation 2X + 4X = 90, what is the value of X?

• 15

• 10

• 20

• 25

If 2X + 5X + 6 = 90, what is the value of X?

• 14

• 12

• 10

• 16

In a quadrilateral with three 90-degree angles, what must be the measure of the fourth angle?

• 180 degrees

• 60 degrees

• 90 degrees

• 120 degrees

If 2X + X + 2 + 1 = 90, what is the value of X?

• 29

• 28

• 30

• 27

What is the measure of an angle if its complementary angle is 60 degrees?

• 120 degrees

• 90 degrees

• 60 degrees

• 30 degrees