Geometry Basics

Front

What is a part of a line that starts at an endpoint and extends forever in one direction?

Back

Ray

Front

What is the term for the figure formed by two rays that have a common endpoint?

Back

Angle

Front

What do you call two rays that have a common endpoint and form a line?

Back

Opposite Rays

Front

What is the symbol that indicates two figures are congruent?

Back

Congruent

Front

What is a straight path that extends infinitely in both directions?

Back

Line

Front

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

Back

Line Segment

Front

What is the term for angles that add up to 90 degrees?

Back

Complementary Angles

Front

What do you call angles that add up to 180 degrees?

Back

Supplementary Angles

Front

What is the term for lines that never intersect and are always the same distance apart?

Back

Parallel Lines

Front

What is the point where two lines intersect called?

Back

Vertex