Geometry Semester Exam

Front

What is a ray in geometry?

Back

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

Front

How many endpoints does a line have?

Back

A line has zero endpoints.

Front

What type of angle measures less than 90 degrees?

Back

An acute angle measures less than 90 degrees.

Front

What are perpendicular lines?

Back

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

Front

What is a line segment?

Back

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

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 right angle?

Back

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

Front

What is the difference between parallel lines and intersecting lines?

Back

Parallel lines never intersect, while intersecting lines cross each other at one point.

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.