Complementary and Supplementary Angles

This video tutorial introduces the concept of angles, focusing on how to measure and draw them using a protractor. It covers right angles, acute angles, obtuse angles, and complementary angles, explaining the differences and how to calculate their measurements. The tutorial also discusses the use of inner and outer numbers on a protractor and provides examples of drawing different types of angles.

What tool is used to measure angles?

• Compass

• Ruler

• Scale

• Protractor

Which of the following is NOT a type of angle?

• Acute angle

• Parallel angle

• Obtuse angle

• Right angle

What is the purpose of a protractor?

• To draw circles

• To measure weight

• To measure angles

• To measure length

What is the degree measure of a right angle?

• 90 degrees

• 360 degrees

• 45 degrees

• 180 degrees

How do you measure an angle that doesn't start at zero?

• Subtract the smaller number from the larger number

• Add the numbers

• Multiply the numbers

• Divide the numbers

If an angle measures 95 degrees, what type of angle is it?

• Acute

• Right

• Obtuse

• Reflex

How do you find the measure of an angle using a protractor?

• Multiply the numbers

• Subtract the numbers

• Divide the numbers

• Add the numbers

What is an angle called if it is less than 90 degrees?

• Right angle

• Obtuse angle

• Acute angle

• Reflex angle

If an angle is 20 degrees, what type of angle is it?

• Right

• Obtuse

• Reflex

• Acute

What do you call two angles that add up to 90 degrees?

• Supplementary angles

• Complementary angles

• Reflex angles

• Acute angles