Rotation Rules
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What is the rule for a 180⁰ counter clockwise rotation about the origin?
(x,y)→(-x,-y)
What is the rule for a 90⁰ counter clockwise rotation about the origin?
(x,y)→(-y,x)
What is the rule for a 270⁰ counter clockwise rotation about the origin?
(x,y)→(y,-x)
A 180⁰ counter clockwise rotation about the origin is the same as . . .
a 180⁰ clockwise rotation about the origin.
A 90⁰ counter clockwise rotation about the origin is the same as . . .
a 270⁰ clockwise rotation about the origin.
A 270⁰ counter clockwise rotation about the origin is the same as . . .
a 90⁰ clockwise rotation about the origin.
