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1. |
Identify the transformation. |
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A. |
Reflection |
B. |
Dilation |
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C. |
Rotation |
D. |
Translation |
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Hint |
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2. |
Triangle QRS has vertices Q(5, 3), R(3, 7), and S(1, 2). Find the coordinates of the image of triangle QRS after it is rotated 90° counterclockwise about the origin. |
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A. |
Q´(5, -3), R´(3, -7), S´(1, -2) |
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B. |
Q´(-5, -3), R´(-3, -7), S´(-1, -2) |
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C. |
Q´(-3, -5), R´(-7, -3), S´(-2, -1) |
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D. |
Q´(-3, 5), R´(-7, 3), S´(-2, 1) |
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Hint |
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3. |
Triangle DEF has vertices D(-6, -1), E(-4, -8), and F(-2, -5). Find the coordinates of the image of triangle DEF after it is rotated 180° about the origin. |
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A. |
D´(1, -6), E´(8, -4), F´(5, -2) |
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B. |
D´(-1, -6), E´(-8, -4), F´(-5, -2) |
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C. |
D´(6, 1), E´(4, 8), F´(2, 5) |
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D. |
D´(1, 6), E´(8, 4), F´(5, 2) |
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Hint |
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4. |
What is the point about which a figure is rotated called? |
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A. |
image |
B. |
transformation point |
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C. |
point |
D. |
center of rotation |
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Hint |
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5. |
What is the rule where the angle of rotation is 90° clockwise, and the center is (0, 0)? |
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A. |
(x, y) (-y, -x) |
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B. |
(x, y)(-x, y) |
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C. |
(x, y)(y, -x) |
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D. |
(x, y)(-x, -y) |
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Hint |
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