Geometry Vocabulary

Complementary angles are angles that add up to _degrees

Supplementary Angles are angles that add up to _ degrees

Which option shows collinear points?

Hint: collinear means multiple points on the same line.

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Select ALL correct ways to name the angle shown.

Congruent is the fancy math word for...

• different

• equal

• adding up to 90 degrees

• adding up to 180 degrees

Which option shows a ray?

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The measures of Vertical Angles are always

• equal

• different

• 90 degrees

• 180 degrees

Two coplanar lines that never intersect

• Parallel Lines

• Perpendicular Lines

• Collinear

• Coplanar

An angle less than 90°

• acute angle

• obtuse angle

• right angle

• straight angle

A flat surface with two dimensions: length and width

• plane

• coplanar

• vertex

• collinear