Measuring Angles and Additive Angles

What type of angle measures LESS than 90 degrees?

• an acute angle

• an obtuse angle

• a right angle

• a straight angle

What type of angle measures MORE than 90 degrees, but not 180 degrees?

• an acute angle

• an obtuse angle

• a right angle

• a straight angle

What type of angle measures EXACTLY 90 degrees?

• an acute angle

• an obtuse angle

• a right angle

• a straight angle

What type of angle measures EXACTLY 180 degrees?

• an acute angle

• an obtuse angle

• a right angle

• a straight angle

What is the measurement of this angle?

• A

• B

• C

• D

What is the measurement of this angle?

• A

• B

• C

• D

The measurement of this angle is 90 degrees. What is the value of M?

• A

• B

• C

• D

Angle R is 155 degrees. What is the measure of angle M?

• A

• B

• C

• D

What is the measure of the other part of angle D?

• 65

• 70

• 75

• 135

Use the image to answer the question. What is the value of A?

• 121

• 125

• 19

• 9