Understanding Complementary Angles

The video tutorial explains complementary angles, which are two angles that add up to 90 degrees. It provides several examples to solve for unknown variables when given relationships between angles. The tutorial covers different scenarios, such as when angles are expressed as multiples or sums of variables, and demonstrates how to solve these equations step-by-step. The video concludes with a summary of the key concept that complementary angles always sum to 90 degrees.

What is the sum of two complementary angles?

• 180 degrees

• 90 degrees

• 60 degrees

• 45 degrees

Tags

CCSS.7.G.B.5

If angle 1 is 2x and angle 2 is 3x, what is the value of x?

• 22

• 20

• 18

• 15

Tags

CCSS.7.G.B.5

What is the measure of angle 1 if it is represented by 2x and x is 18?

• 72 degrees

• 54 degrees

• 90 degrees

• 36 degrees

Tags

CCSS.7.G.B.5

If angle 1 is x and angle 2 is x+20, what is the value of x?

• 25

• 40

• 30

• 35

Tags

CCSS.7.G.B.5

What is the measure of angle 2 if it is represented by x+20 and x is 35?

• 45 degrees

• 50 degrees

• 55 degrees

• 60 degrees

Tags

CCSS.7.G.B.5

If angle 1 is twice angle 2 and angle 2 is x, what is the value of x?

• 20

• 25

• 30

• 35

Tags

CCSS.7.G.B.5

What is the measure of angle 1 if it is twice angle 2 and angle 2 is 30?

• 80 degrees

• 70 degrees

• 60 degrees

• 50 degrees

Tags

CCSS.7.G.B.5

If angle 1 is 30+X and angle 2 is 40+X, what is the value of X?

• 15

• 20

• 10

• 5

Tags

CCSS.4.MD.C.7

What is the measure of angle 1 if it is represented by 30+X and X is 10?

• 50 degrees

• 40 degrees

• 60 degrees

• 30 degrees

Tags

CCSS.7.G.B.5

What is the measure of angle 2 if it is represented by 40+X and X is 10?

• 40 degrees

• 50 degrees

• 60 degrees

• 70 degrees

Tags

CCSS.7.G.B.5