Geometry CP2 - Midterm Vocabulary

Front

Several points that lie on the same line

Back

Collinear points are points that lie on the same straight line.

Front

Two objects are identical copies of each other

Back

Congruent means that two figures have the same shape and size.

Front

A section of a line with an endpoint at each end

Back

A segment is a part of a line that has two endpoints.

Front

One angle that measures 180 degrees

Back

A Straight Angle is an angle that measures exactly 180 degrees.

Front

Two lines in different planes that never intersect

Back

Skew lines are lines that do not intersect and are not parallel.

Front

A line that extends infinitely in one direction

Back

A ray is a part of a line that starts at a point and extends infinitely in one direction.

Front

A flat surface that extends infinitely in all directions

Back

A plane is a two-dimensional flat surface.

Front

Angles that add up to 90 degrees

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

Angles that add up to 180 degrees

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

A triangle with all sides of equal length

Back

An equilateral triangle has all three sides of equal length.