Understanding Angles

What is an Acute Angle?

• An angle with less than 90 degrees

• An angle that is between 90 and 180 degrees

• An angle equal to 180°

• An angle that measures exactly 90 degrees

What are Complementary Angles?

• Two angles that add up to 180 degrees

• Two angles that add up to 90 degrees

• Two angles that share a vertex

• Two angles that are opposite to each other

What is a Right Angle?

• An angle that measures exactly 90 degrees

• An angle with less than 90 degrees

• An angle that is between 90 and 180 degrees

• An angle equal to 180°

What is a Straight Angle?

• An angle that measures exactly 90 degrees

• An angle equal to 180°

• An angle that is more than 180 degrees

• An angle that is between 90 and 180 degrees

What is an Obtuse Angle?

• An angle that is less than 90 degrees

• An angle that is equal to 180°

• An angle that is between 90 and 180 degrees

• An angle that is more than 180 degrees

What are Supplementary Angles?

• Two angles that add up to 90 degrees

• Two angles that add up to 180 degrees

• Two angles that share a vertex

• Two angles that are opposite to each other

What are Adjacent Angles?

• Two angles that share a vertex and a side

• Two angles that add up to 90 degrees

• Two angles that are opposite to each other

• Two angles that are equal

What are Vertical Angles?

• Angles that lie opposite to each other

• Angles that share a vertex

• Angles that add up to 180 degrees

• Angles that are equal

What are Alternate Exterior Angles?

• Angles that lie outside of the pair of lines

• Angles that lie opposite to each other

• Angles that share a vertex

• Angles that add up to 90 degrees

What is a Corresponding Angle?

• Angles in matching corners when two lines are crossed

• Angles that add up to 180 degrees

• Angles that are equal

• Angles that share a vertex