Geometry Review

Front

What is a polygon?

Back

A polygon is a closed shape made up of straight line segments. Examples include triangles, quadrilaterals, and pentagons.

Front

What is a right angle?

Back

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

Front

What are parallel lines?

Back

Parallel lines are lines that run in the same direction and never meet, no matter how far they are extended.

Front

What are perpendicular lines?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees).

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

How do you measure an angle using a protractor?

Back

To measure an angle, align the protractor's center point with the angle's vertex and read the measurement where one ray crosses the protractor's scale.

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

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 a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.