Basic Vocabulary Geometry

A flat surface made up of points that has two dimensions and extends without end and is represented by a shape that looks like a floor or wall.

• Point

• Plane

• Angle

• Line

What are these figures called?

• Points

• Lines

• Angles

• Planes

A location in space that is represented by a dot and has no dimensions

• Point

• Line

• Plane

• Angle

A line has one dimension. It is represented by a line with two arrowheads, but it extends without end.

• Point

• Line

• Plane

• Angle

Consists of 2 endpoints and all the points in between.

• Ray

• Line

• Line Segment

• Angle

Coplanar lines that do not intersect.

• Parallel Lines

• Perpendicular Lines

• Congruent Segments

• Parallel Planes

The set of all points in a plane that are equidistance from a given point.

• Circle

• Polygon

• Concave

• Dodecagon

Two lines that intersect to form right angle.

• Parallel Lines

• Perpendicular Lines

• Congruent Segments

• Parallel Planes

Which one is NOT a way to name this angle?

• ∠ABC

• ∠CAB

• ∠1

• ∠A

Which one is a way to name this line?

• ̅A̅ ̅B̅

• ̅B̅ ̅A̅

• Line A

• Line l