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1. |
Triangle QRS with coordinates Q (3, 2), R (-2, 1) and S (1, -3) is rotated 180° on the coordinate plane. What are the coordinates of triangle Q'R'S'? |
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A. |
Q'(-3, -2), R'(2, -1), S'(-1, 3) |
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B. |
Q'(-2, -3), R'(2, -1), S'(-1, 3) |
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C. |
Q'(-3, -2), R'(-2, -1), S'(-1, -3) |
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D. |
Q'(-2, -3), R'(-1, 2), S'(-1, 3) |
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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. |
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) |
B. |
(x, y) (-y, -x) |
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C. |
(x, y) (-x, -y) |
D. |
(x, y) (-x, y) |
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Hint |
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4. |
Which is the image of the figure shown when it is tuned 180° clockwise about the center point P? |
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Hint |
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5. |
Which is the image of the figure shown when it is tuned 90° counter clockwise about the center point P? |
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