Final Review

Front

What is an acute angle?

Back

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

Front

How do you find the midpoint between two points?

Back

The midpoint between two points (x1, y1) and (x2, y2) is calculated as ((x1 + x2)/2, (y1 + y2)/2).

Front

What is the approximate number of daily users Snapchat had at the beginning of 2017?

Back

Approximately 150 million users.

Front

What does it mean for points to be collinear?

Back

Collinear points are points that lie on the same straight line.

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 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 are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

What is the formula for the distance between two points?

Back

The distance d between two points (x1, y1) and (x2, y2) is given by d = √((x2 - x1)² + (y2 - y1)²).