Math Practice 101
Homework Explained - Math Practice 101

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Grade 8 HMH Go Math - Answer Keys
Chapter 10:Transformations and Similarity; Lesson 3:Similar Figures


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10.3 Independent Practice

  • Question 6 (request help)

    A designer creates a drawing of a triangular sign on centimeter grid paper for a new business. The drawing has sides measuring 6 cm, 8 cm, and 10 cm, and angles measuring 37°, 53°, and 90°. To create the actual sign shown, the drawing must be dilated using a scale factor of 40.

    a. Find the lengths of the sides of the actual sign.
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  • Question 6 (request help)

    b. Find the angle measures of the actual sign.
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  • Question 6 (request help)

    c. The drawing has the hypotenuse on the bottom. The business owner would like it on the top. Describe two transformations that will do this.
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  • Question 6 (request help)

    d. The shorter leg of the drawing is currently on the left. The business owner wants it to remain on the left after the hypotenuse goes to the top. Which transformation in part c will accomplish this?
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In Exercises 7–10, the transformation of a figure into its image is described. Describe the transformations that will transform the image back into the original figure. Then write them algebraically.

  • Question 7 (request help)

    The figure is reflected across the x-axis and dilated by a scale factor of 3.
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  • Question 8 (request help)

    The figure is dilated by a scale factor of 0.5 and translated 6 units left and 3 units up.
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  • Question 9 (request help)

    The figure is dilated by a scale factor of 5 and rotated 90° clockwise.
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