Geometric Angle Vocabulary

An angle formed by opposite rays that measures 180 degrees   

• right angle
• straight ange
• acute angle
• obtuse angle

Two angles who sum is 90 degrees

• right angle
• supplementary angle
• complementary angles
• linear pair

Two angles who sum is 180 degrees

• Complementary angles
• Right angle
• Supplementary Angles
• Acute angles

Two adjacent angels that from a line and share a common side.

• Linear Pair
• Complementary Angles
• Right angles
• Vertical Angles

The nonadjacent angles formed by two intersecting lines.

• Linear Pair
• Supplementary Angles
• Vertical Angles
• Adjacent Angles

If A and B are vertical angles, what can we conclude about A and B?

• They are complementary angles
• They are supplementary angles
• They are congruent angles
• They are adjacent angles

Given that angles A and B form a linear pair what can we conclude?

• A + B = 90
• A and B are both acute angles
• A + B = 180
• A and B are both obtuse angles

What type of angle is shown?

• acute
• obtuse
• right
• straight

If we are given that angles C and D are complementary angles what can we conclude?

• C + D = 180 by definition of right angles
• C + D = 90 by definition of complementary angles
• C + D = 180 by definition of complentary angles
• C and D are congruent angles

What type of angle is shown?

• acute
• obtuse
• right
• straight