QUIZ
Dilations and Similar Triangles
a day ago by
Renee Garcia
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  • Question 1
    30 seconds
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    Q. A dilation always produces a similar figure. Similar figures have the same ______ but different ______. 
    answer choices
    measure; shapes
    sizes; shapes
    value; measures
    shape; sizes
  • Question 2
    30 seconds
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    Q.

    Which must be true of a scale factor of a dilation if the image is smaller that the pre-image?

    answer choices

    The scale factor is positive

    The scale factor is greater than 1

    The scale factor is between 0 and 1

    The scale factor is negative

  • Question 3
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    Q. How does a dilation change the angles of a polygon?
    answer choices
    It changes by the scale factor.
    Dilations do not change the angles.
    It is impossible to answer this question.  The angles change unpredictably.
    The angles all change to larger angles.
  • Question 4
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    Q. State the coordinate of the image of the given point B (-10,-6) under a dilation with center at the origin with the given scale factor k = 1/2.
    answer choices
    (5,3)
    (20,12)
    (-20,-12)
    (-5,-3)
  • Question 5
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    Q. Choose the correct scale factor:
    answer choices
    2
    3
    1/3
    1/2
  • Question 6
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    Q.

    Figure D´E´F´G´ is a dilation with center (0, 0) of figure DEFG. What is the scale factor?

    answer
    four
    alternatives
    4
  • Question 7
    120 seconds
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    Q.

    Rectangle ABCD is dilated by a scale factor of 1/2 with the center at B. What are the coordinates of point D?

    answer choices

    (6,4)

    (3,2)

    (4,7)

    (12,8)

  • Question 8
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    Q.

    Determine whether the triangles are similar by AA~, SSS~, SAS~, or not similar.

    answer choices

    AA

    SSS

    SAS

    Not similar

  • Question 9
    30 seconds
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    Q.

    Determine whether the triangles are similar by AA~, SSS~, SAS~, or not similar.

    answer choices

    AA

    SSS

    SAS

    no similar

  • Question 10
    30 seconds
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    Q.

    Determine whether the triangles are similar by AA~, SSS~, SAS~, or not similar.

    answer choices

    SSS

    AA

    SAS

    not similar

  • Question 11
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    Q.

    Are the triangles similar?

    answer choices

    Yes

    No

  • Question 12
    120 seconds
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    Q. To find the height of a very tall pine tree, you place a mirror on the ground and stand where you can see the top of the pine tree.  How tall is the tree?
    answer choices
    144 feet
    72 feet
    36 feet
  • Question 13
    120 seconds
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    Q.

    Rajesh is making pennants in preparation for a school soccer game. He wants the pennants to be similar triangles. Which of these triangles could he use for the pennants?

    answer choices

    QRS and TVW

    QRS and XYZ

    TVW and JKL

    TVW and XYZ

  • Question 14
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    Q.

    Find the value of x, and use it to find KM.

    answer choices

    x = 10, KM = 25

    x = 11, KM = 28

    x = 13.3 KM = 34.9

    x = 4.3, KM = 8

  • Question 15
    120 seconds
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    Q. Find side length X.
    answer choices
    22.5
    10
    9
    7.5
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