U1 Vocab Review

True or False: A line segment has two endpoints.

• True

• A line segment has infinite endpoints

• A line segment has no endpoints

• False

What is the midpoint of a line segment?

• The midpoint of a line segment is the point that is located at one end of the segment.

• The midpoint of a line segment is the point that divides the segment into unequal parts.

• The midpoint of a line segment is the point that divides the segment into three equal parts.

• The midpoint of a line segment is the point that divides the segment into two equal parts.

What is the definition of a line?

• A line is a straight path that extends infinitely in both directions.

• A line is a series of connected points.

• A line is a two-dimensional shape with no endpoints.

• A line is a curved path that extends infinitely in both directions.

What is the definition of a ray?

• A ray is a part of a line that has one endpoint and extends infinitely in one direction.

• A ray is a curved line segment with one endpoint.

• A ray is a straight line segment with two endpoints.

• A ray is a part of a line that has two endpoints.

What is the definition of a line segment?

• A line segment is a curved line with no endpoints.

• A line segment is a part of a line that is bounded by two distinct endpoints.

• A line segment is a line that extends infinitely in both directions.

• A line segment is a line that intersects with other lines at multiple points.

Find the length indicated.

(a)  

A straight path with no beginning or end is a...

• ray

• line

• plane

• angle

A flat surface is called a...

• plane

• line

• point

• ray

Find the length indicated.

(a)  

Write an equation that correctly models the lengths shown.

• 2x + 20 + x + 21 = 9

• 2x + 20 + 9 = x + 21

• 9 + x + 21 = 2x + 20

• 2x + 20 - 9 = x + 21