Grade 4 Geometry Essential Vocabulary

The exact location in space represented by a dot is called a:

• point

• line

• plane

• space

A set of connected points continuing without end in both directions is called a:

• line

• segment

• ray

• angle

What is a part of a line with two endpoints called?

• Line segment

• Ray

• Angle

• Circle

A part of a line that has one endpoint and goes on forever in one direction is called a:

• line segment

• ray

• line

• angle

What is formed by two rays that share an endpoint?

• A line

• An angle

• A circle

• A point

The point at which two line segments, lines, or rays meet to form an angle is called a:

• vertex

• intersection

• junction

• corner

What is a point at either end of a line segment, or a point at one end of a ray called?

• Endpoint

• Midpoint

• Vertex

• Origin

What are lines that are always the same distance apart and do not intersect called?

• Parallel lines

• Perpendicular lines

• Intersecting lines

• Skew lines

Markings used to show that two sides are parallel are called:

• parallel lines

• parallel marks

• hash marks

• arrows

What is the notation used to show that lines or line segments are parallel?

• Symbolic notation (parallel)

• Perpendicular (lines)

• Geometric markings (right angle)

• Intersect (intersecting lines)