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Home > CC4 > Chapter 8 > Lesson 8.1.2 > Problem 8-28

8-28.

On graph paper, draw if , , and . 8-28 HW eTool (Desmos). Homework Help ✎

  1. Verify that is a midpoint of .

    To find the midpoint between two points (average -coordinates, average -coordinates).

  2. Write the equation of the line through points and .

    Read Math Notes box in Lesson 2.3.2 on linear equations from slopes and/or points.

    Calculate the slope between points and .

    Using the slope, the - and -coordinates from point or , and slope intercept form (). Solve for .

  3. Is BD a height of ? Use slope to show that is perpendicular to AC.

    Compare the slopes of segment and segment . What do you notice?

  4. What is the perimeter and area of ?

    Use the Pythagorean Theorem to find the length of all missing sides.

    Perimeter units, Area

Use the eTool below to solve the problem.
Click the link at right for the full version of the eTool: Int1 8-28 HW eTool