Answer:
Step-by-step explanation:
Rotation 180° (in either direction) about the origin causes each coordinate to have its sign changed. Effectively, the coordinate matrix is multiplied by -1.
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<em>Additional comment</em>
This is equivalent to reflection across the origin.
75%
percent = part/whole * 100%
percent = 12/16 * 100%
percent = 0.75 * 100%
percent = 75%
Answer: 75%
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