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Home > CCG > Chapter 7 > Lesson 7.1.2 > Problem 7-20


On graph paper, plot the points and .  

  1. Find (the length of ).

    Use the Pythagorean Theorem to find the length of .

  2. Locate the midpoint of and label it . What are the coordinates of ?

    Use two congruent slope triangles to find the midpoint.

  3. Find . Can you do this without using the Pythagorean Theorem?

    Because C is the midpoint, what does that tell you about the length of ?

Use the eTool below to find the length and midpoint of .
Click the link at right for the full version of the eTool: 7-20 HW eTool