Tools of Geometry

Front

What are coplanar points?

Back

Points that lie on the same plane.

Front

What is the correct name for the angle marked as \( \angle 5 \)?

Back

\( \angle IVJ \)

Front

Points that lie on the same line are _________.

Back

Collinear.

Front

What do we call lines that intersect each other?

Back

Intersecting Lines.

Front

Name the angle formed by lines DE and EF in long form.

Back

\( \angle FED \)

Front

What is a right angle?

Back

An angle that measures exactly 90 degrees.

Front

Define collinear points.

Back

Points that lie on the same straight line.

Front

What is the definition of parallel lines?

Back

Lines in a plane that never meet and are always the same distance apart.

Front

What is the definition of perpendicular lines?

Back

Lines that intersect at a right angle (90 degrees).

Front

What is an angle?

Back

A figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex.