Introduction

Imagine you are driving your car to meet a friend to have lunch. You decide to meet at a restaurant that is at the midpoint between you.

In geometry, the midpoint of a line is a point located at exactly half the distance of the line.
Imagine the distance between you and your friend is represented by the number line below.

A is your house.
B is your friend's house.
C is the location where you plan to meet and have lunch.
If the distance from your house to your friend's house (AB) is 14 miles, what is the distance from your house to the meeting place (AC)?

 

Lesson Objectives

Following successful completion of this lesson, students will be able to...

  • Find the ratio of the segments given a point that partitions a segment.
  • Find the missing segment length given the midpoint.
  • Find the midpoint of a line segment

Enduring Understandings

  • The number line can be used to find the length of line segments.

The above objectives correspond with the Alabama Course of Study: Geometry standards: 32

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