Complementary and Supplementary Angles

The video tutorial guides Math 7 students through creating equations to solve for missing angles. It covers the concepts of straight, supplementary, and complementary angles, explaining how to identify and solve for them using equations. The teacher provides examples and clarifies common mistakes, ensuring students understand the properties of these angles and how to apply them in problem-solving.

What is the sum of angles on a straight line?

• 45 degrees

• 360 degrees

• 180 degrees

• 90 degrees

If two angles are supplementary and one is 110 degrees, what is the other angle?

• 60 degrees

• 80 degrees

• 90 degrees

• 70 degrees

Which equation represents a supplementary angle scenario?

• x - y = 180

• x + y = 90

• x + y = 180

• x - y = 90

If angle A is 150 degrees, what is the sum of the angles opposite to it?

• 90 degrees

• 180 degrees

• 150 degrees

• 360 degrees

What equation would you use if two opposite angles sum up to 150 degrees?

• 2x + 4x = 180

• 2x + 4x = 150

• 2x + 4x = 90

• 2x + 4x = 360

If 2x + 4x equals 150, what is the value of x?

• 40

• 35

• 30

• 25

What is the angle opposite to a 150-degree angle in a straight line?

• 30 degrees

• 150 degrees

• 180 degrees

• 90 degrees

What is the sum of complementary angles?

• 180 degrees

• 45 degrees

• 90 degrees

• 360 degrees

If one angle is 35 degrees, what is the other angle in a complementary pair?

• 75 degrees

• 55 degrees

• 45 degrees

• 65 degrees

Which equation represents a complementary angle scenario?

• x - y = 90

• x + y = 180

• x + y = 90

• x - y = 180