1 Expert Answer
When you have a 180 degree projection of a point across the origin, you can get the other point by changing the signs of the x and y coordinates.
It's easy to visualize this by drawing a line on a piece of graph paper that starts at (3, -3) and extends through the origin the same distance on the other side. Remember that 180 degrees is a straight line (90 and 270 degrees are at right angles to the original line).
In this case, the projection of (3, -3) at 180 degrees will be (-3, 3).
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William W.
Do you mean reflected around the origin 180 degrees?10/12/21