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17.3 Closure

Quiz by Kristina Haley

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3 questions
Show answers
  • Q1
    A regular pentagon is dilated by a scale factor of 1.5. If the angle measures of the pre-image are known, which determines the angle measures of the image?
    Divide the angle measures in the pre-image by 1.5.
    Multiply the angle measures in the pre-image by 1.5.
    Add 1.5 times the average pre-image angle measure to each angle.
    Use the same angle measures as those in the pre-image.
    30s
  • Q2
    Triangle ABC undergoes a dilation with point A as the center of dilation. Based on the figure, which can be determined about the scale factor of the dilation?
    Question Image
    The scale factor is greater than 1.
    The scale factor is a negative number that is greater than –1.
    The scale factor is less than –1.
    The scale factor is a positive number that is less than 1.
    30s
  • Q3
    The area of a garden in the shape of an irregular quadrilateral is 100 square feet. The gardener purchases adjacent land, resulting in a new garden that is the image of the original garden under a dilation. If the area of the image is 900 square feet, by which scale factor is the original garden dilated?
    1/9
    3
    1/3
    9
    30s

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