Q1:
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How many invariant points are there usually under a rotation ? |
A. 0 B. 1 C. 2 D. infinite |
Answer 1:
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Q2:
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A rotation of 90° is also called a |
A. half-turn B. quarter turn C. three-quarter turn D. full turn |
Answer 2:
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Q3:
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P' is the image of (-3, 4) after a rotation of 180°about the origin. The coordinates of P' are |
A. (4, -3) B. (3, -4) C. (-4, 3) D. (-4, -3) |
Answer 3:
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Q4:
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What is the angle of rotation that maps the triangle AOB onto triangle COD? |
A. 180° B. 90° C. -90° D. -180° |
Answer 4:
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Q5:
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In the diagram above, what angle of rotation would map the bottom triangle onto the top one? |
A. 180° B. 90° C. -90° D. 180° |
Answer 5:
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Q6:
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A rotation of - 45° about (0, 0) is equivalent to a rotation about (0, 0) of: |
A. 135° B. 45° C. 315° D. 225° |
Answer 6:
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Q7:
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A rotation of 45°followed by a rotation of -45°about the same point is equivalent to |
A. A half-turn B. A quarter-turn C. A rotation of 360° D. A rotation of 90° |
Answer 7:
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Q8:
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A shape and its image after rotation are |
A. congruent B. different C. parallel D. perpendicular |
Answer 8:
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Q9:
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A line and its image under a rotation of 180° are |
A. parallel B. perpendicular C. at right angles D. unmoved |
Answer 9:
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Q10:
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The image of the point (2, 1) after a rotation of 180°, centre (0, 0), is: |
A. (2, -1) B. (-2, 1) C. (2, 1) D. (-2, -1) |
Answer 10:
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