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1. |
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´(-3, -5), R´(-7, -3), S´(-2, -1) |
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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´(-5, -3), R´(-3, -7), S´(-1, -2) |
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Hint |
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2. |
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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3. |
What is the rule where the angle of rotation is 90° counterclockwise, 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)(-x, y) |
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D. |
(x, y)(-y, x) |
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Hint |
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4. |
Which is the image of the figure shown when it is tuned 270° counter clockwise about the center point P? |
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A. |
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B. |
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C. |
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D. |
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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)(-y, -x) |
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C. |
(x, y)(-x, y) |
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D. |
(x, y)(-x, -y) |
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Hint |
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