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3.Suppose that two parallelograms are similar. Then suppose that one of them is rotated, and after the rotation the parallelograms are still similar. Which of the following statements must be true?
A. The parallelogram must have been rotated by 90°.
B. The parallelogram must have been rotated by 180°.
C. The parallelogram must have been rotated by 360°.
D. The parallelogram could have been rotated by any number of degrees.




4.Suppose you have triangle ABC and triangle DEF, and they are similar, with a scale factor of 0.5. If the angle measures of ABC are 80°, 80°, 20°, what are the measures of the angles in DEF?
A. 40°, 40°, and 10°
B. 40°, 40°, and 100°
C. 80°, 80°, and 20°
D. Cannot be determined.
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