Which of the following are the correct coordinates when the point (1,8) is rotated 180° anticlockwise about the origin?
Question
Which of the following are the correct coordinates when the point (1,8) is rotated 180° anticlockwise about the origin?
Solution
To find the new coordinates of a point after a 180° rotation anticlockwise about the origin, you can use the following rules:
- The x-coordinate becomes its negative.
- The y-coordinate also becomes its negative.
So, if we apply these rules to the point (1,8):
- The x-coordinate 1 becomes -1.
- The y-coordinate 8 becomes -8.
Therefore, the coordinates of the point (1,8) after a 180° rotation anticlockwise about the origin are (-1,-8).
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