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Home > CC3 > Chapter 9 > Lesson 9.2.5 > Problem 9-129


On a coordinate grid, draw a triangle with vertices at  and .  

  1. Find the lengths of each side of the triangle. What is the perimeter?

    To find the hypotenuse, we can use the Pythagorean theorem:
    If the legs are and , how long is the hypotenuse?
    After finding the hypotenuse, find the perimeter.

  2. What type of triangle is formed by these points? Justify your answer.

    The triangle has a right angle so it is a right triangle.

Use the eTool below to help you with this problem.
Click the link at right for the full version of the eTool: 9-129 HW eTool (Desmos)