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What are the rules for rotations: 8th grade math

User Mianjee
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The rules are:
Rules of Rotation. There are some general rules for the rotation of objects using the most common degree measures (90 degrees, 180 degrees, and 270 degrees). The general rule for rotation of an object 90 degrees is (x, y) --------> (-y, x)
User Swtdrgn
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The rules for negative rotation are as follows:
-90 degrees, the rule is (x, y) --------> (y, -x)
-180 degrees, the rule is (x, y) --------> (-x, -y)
-270 degrees, the rule is (x, y) --------> (-y, x)

The general rule for rotation of an object 90 degrees is (x, y) --------> (-y, x). ... When you rotate the image using the 90 degrees rule, the end points of the image will be (-1, 1) and (-3, 3). The rules for the other common degree rotations are: For 180 degrees, the rule is (x, y) --------> (-x, -y)
User Mbrc
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