A collection of points that have a distinct beginning and end.

A collection of points that continue in opposite directions with no end.

A flat surface of points that continues infinitely in all four directions.

A collection of points that only extends in one direction.

Two rays that share a common endpoint.

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

Two lines that never meet.

Two lines in different planes that never meet.

Two collinear lines that meet to form four right angles.

Two coplanar lines that meet at a common point.

Choose all of the characteristics of a polygon

The points where the sides of a polygon meet.

True or False: Equiangular triangles and equilateral triangles are the same.

An angle having a measure less than 90^o.

An angle having a measure of exactly 180^o.

An angle having a measure greater than 90^o but less than 180^o.

An angle having a measure of 90^o.

To have the same measure.

The space within a two-dimensional figure.

The amount of space within a three-dimensional figure.

The distance around the outside of a circle.

The distance around the outside of a two-dimensional figure.

A type of triangle in which only two sides are congruent.

A type of triangle in which no sides are congruent.

A type of triangle in which all angles have a measure less than 90^o.

A type of triangle in which one angle has a measure greater than 90^o but less than 180^o.