8.23 Geometry Vocab Quiz - Angles

The amount of turn or opening between two rays around their common point (the vertex).

• Angle

• linear pair

• segment

• point

An angle measuring greater than 90 degrees and less than 180 degrees.

• acute angle

• obtuse angle

• right angle

• straight angle

An angle measuring exactly 90 degrees.

• straight angle

• complementary angles

• right angle

• acute angle

An angle with a measure less than 90 degrees.

• straight angle

• complementary angles

• supplementary angles

• acute angle

An angle with a measure of 180 degrees. It looks like a straight line.

• straight angle

• complementary angles

• vertical angles

• adjacent angles

Two angles whose measures have a sum of 90 degrees.

• obtuse angle

• complementary angles

• supplementary angles

• vertical angles

Two angles whose angles have a sum of 180 degrees.

• Obtuse Angle

• Acute Angle

• Complementary Angles

• Supplementary Angles

Two angles that have a common side and a common vertex. The angles do not overlap.

• Adjacent Angles

• Vertical Angles

• Right Angle

• Acute Angle

Adjacent angles whose measures have a sum of 180 degrees. Their outer rays form a line.

• Complementary Angles

• Linear Pair

• Obtuse angle

• Vertical Angles

Angles opposite each other when lines cross. These angles are congruent.

• Right Angle

• Complementary Angles

• Supplementary Angles

• Vertical Angles