Mid-Module 4 Review

Front

What is the measure of an angle that is 1/4 of a circle?

Back

90°

Front

What type of angle measures exactly 180°?

Back

Straight angle

Front

How many degrees are in a full circle?

Back

360°

Front

What do we call a line that intersects another line at a right angle?

Back

Perpendicular lines

Front

What is a line segment?

Back

A part of a line that has two endpoints.

Front

What type of angle measures less than 90°?

Back

Acute angle

Front

What type of angle measures more than 90° but less than 180°?

Back

Obtuse angle

Front

What is the term for an angle that measures exactly 90°?

Back

Right angle

Front

If two lines are perpendicular, what is the relationship between their slopes?

Back

The product of their slopes is -1.

Front

What is the sum of the angles in a triangle?

Back

180°