Geometry (Unit 14) Review

Front

What is an angle?

Back

An angle is formed by two rays that share a common endpoint, called the vertex.

Front

What tool do you use to measure angles?

Back

A protractor is used to measure angles in degrees.

Front

What is a line segment?

Back

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

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never intersect and are always the same distance apart.

Front

What is a ray?

Back

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

Front

What is symmetry?

Back

Symmetry is when a figure can be divided into two identical halves that are mirror images of each other.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

How do you identify a 60° angle using a protractor?

Back

Place the protractor's center point at the angle's vertex and align one ray with the zero line, then find the 60° mark.

Front

What is a polygon?

Back

A polygon is a closed figure formed by three or more line segments.

Front

What is a triangle?

Back

A triangle is a polygon with three sides and three angles.