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Home > CC4 > Chapter 5 > Lesson 5.1.1 > Problem 5-16

  1. On graph paper, plot ABCD if A(–1, 2), B(0, 5), C(2, 5), and D(6, 2). 5-16 HW eTool (Desmos). Homework Help ✎

    1. If ABCD is rotated 90° counterclockwise (↺) about the origin, name the coordinates of the image ABCD′.

    2. On your graph, reflect ABCD across the y-axis to find ABCD″. Name the coordinates of A″ and C″.

    3. Calculate the area of ABCD. Hint: Divide the figure into rectangles and triangles.

Complete the tables in the eTool below to plot the points, rotate and reflect the shape.
Click on the link at the right to view full version of the eTool: Int1 5-16 HW eTool.