Angles & Polygons Review 2024

Front

What is an angle?

Back

An angle is formed by two rays (sides) that share a common endpoint (vertex). It is measured in degrees (°).

Front

What is a polygon?

Back

A polygon is a closed figure formed by a finite number of straight line segments (sides) connected end to end.

Front

How do you calculate the sum of interior angles of a polygon?

Back

Front

What is the sum of interior angles in a heptagon?

Back

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 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

What is a straight angle?

Back

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

Front

How do you find the measure of an unknown angle in a triangle?

Back

In a triangle, the sum of the interior angles is always 180 degrees. You can find an unknown angle by subtracting the sum of the known angles from 180 degrees.

Front

What is the measure of angle E if the other two angles in a triangle are 60° and 72°?

Back

Angle E = 180° - (60° + 72°) = 48°.