Vocab GEO Unit 2A

Front

What is the sum of the interior angles of a triangle?

Back

180°

Front

What is a location with no size or shape called?

Back

Point

Front

What are two angles with measures that have a sum of 90° called?

Back

Complementary Angles

Front

What is made up of points with no thickness or width?

Back

Line

Front

What is a flat surface made up of points and extends indefinitely in all directions?

Back

Plane

Front

What is the term for angles that are opposite each other when two lines intersect?

Back

Vertical Angles

Front

What do you call angles that are next to each other and share a common side?

Back

Adjacent Angles

Front

What is the term for angles that have a sum of 180°?

Back

Supplementary Angles

Front

What is a part of a line that has two endpoints?

Back

Segment

Front

What is a part of a line that starts at a point and extends indefinitely in one direction?

Back

Ray