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There are many ways of describing the rule. Perhaps the simplest is to premultiply the coordinates of any point by the matrix:( 0 -1 )

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Related Questions

Rule for 90 degrees counterclockwise rotation?

(x,y)-> (-y,x)


What is 90 degrees counterclockwise?

Clockwise means turning to your right, counterclockwise is to the left.


What is the rule for a counterclockwise rotation about the origin of 270?

A counterclockwise rotation of 270 degrees about the origin is equivalent to a clockwise rotation of 90 degrees. To apply this transformation to a point (x, y), you can use the rule: (x, y) transforms to (y, -x). This means that the x-coordinate becomes the y-coordinate, and the y-coordinate becomes the negative of the x-coordinate.


Is a 270 clockwise rotation the same as a 90 degree counterclockwise rotation?

Yes, a 270-degree clockwise rotation is the same as a 90-degree counterclockwise rotation. When you rotate an object 270 degrees clockwise, you effectively move it 90 degrees in the opposite direction, which is counterclockwise. Both rotations will result in the same final orientation of the object.


How many degrees has triangle ABC been rotated counterclockwise about the origin?

180 degrees.


How do you rotate a polygon 90 degrees counterclockwise about the origin?

{1 0} {0 -1}


What is the image of 1 -6 for a 90 counterclockwise rotation about the origin?

(-1, -4) rotated 90 degrees anticlockwise


What is the image of the point (43) if the rotation is 90 degrees?

The answer will depend on whether the rotation is clockwise or counterclockwise.


How do you rotate a triangle 90 degrees counterclockwise?

Rotating a triangle 90 degrees counterclockwise would involve taking an upright triangle and laying is toward the left on its back. Changing position through rotation can cause a better visualization for some problem solving.


What is tilted 90 degrees?

Uranus is the only planet tilted 90 degrees to the right


Which transformation will be equivalent to rotating a figure 90 counterclockwise?

An equivalent transformation to rotating a figure 90 degrees counterclockwise can be achieved by reflecting the figure across the line (y = x) and then reflecting it across the x-axis. This combination of reflections results in the same final orientation as the 90-degree counterclockwise rotation.


What is the image of point (-1-2) if the rotation is 90 degrees?

The answer will depend on whether the rotation is clockwise or counterclockwise.