Basic Geometry Terms and Definitions

The common endpoint of two rays that make up an angle.

• Angle

• Vertex

• Line

• Plane

Two noncoplanar lines in that never meet.

• Parallel

• Perpendicular

• Intersecting

• Skew

Two coplanar lines that meet to form four right angles.

• Parallel

• Perpendicular

• Intersecting

• Skew

Two coplanar lines that meet at a common point.

• Parallel

• Perpendicular

• Intersecting

• Skew

A point that divides a segment into two congruent segments.

• Vertex

• Endpoint

• Angle bisector

• Midpoint

If 2 points determine a line, how many points determine a plane?

• 2 non-collinear points

• 3 collinear points

• 3 non-collinear points

• 2 coplanar points

A flat surface of points that are boundless in all directions is a(n)?

• Line

• Angle

• Plane

• Segment

A point, line, ray, or segment, that intersects at a segment's midpoint?

• Segment bisector

• Adjacent bisector

• Angle bisector

• Perpendicular line

Which of the following is a good definition for a circle?

• All points equidistant from a single point

• A round polygon

• A continuous curve

• Two semi-circles put together

An undefined term in Geometry. A specific location. It has no dimension and is represented by a dot.

• Line

• Midpoint

• Collinear

• Point