4th Grade Geometry Vocabulary

Front

What are lines that lie in the same plane, never intersect, and are always the same distance apart?

Back

Parallel Lines

Front

What is part of a line that begins at one endpoint and continues without end in one direction?

Back

Ray

Front

What do you call lines that intersect at right angles to each other?

Back

Perpendicular Lines

Front

True or False: Parallel lines cross in the middle.

Back

False

Front

True or False: A line is a straight row of points that goes on forever in both directions.

Back

True

Front

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

Back

Line

Front

What do you call the point where two lines meet?

Back

Intersection

Front

What is the term for an angle that measures exactly 90 degrees?

Back

Right Angle

Front

What do you call a line that divides an angle into two equal parts?

Back

Angle Bisector

Front

What is the term for a flat surface that extends infinitely in all directions?

Back

Plane