Topic 1: Foundations of Geometry

Front

What are two rays that have a common endpoint and form a line?

Back

Opposite Rays

Front

What consists of 2 endpoints and all the points in between?

Back

Line Segment

Front

What are the arrows pointing to in a ray?

Back

Endpoints

Front

Which of the following is named by a lower case letter? (point, line, segment, ray, plane)

Back

line

Front

How many noncollinear points are needed to name a plane?

Back

3

Front

What is a straight path that extends infinitely in both directions?

Back

Line

Front

What is a part of a line that has one endpoint and extends infinitely in one direction?

Back

Ray

Front

What is the point that divides a segment into two equal parts?

Back

Midpoint

Front

What is an angle that measures exactly 90 degrees?

Back

Right Angle

Front

What are two angles that add up to 180 degrees?

Back

Supplementary Angles