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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 )
( 1 0 )
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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
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.
How many degrees is a right angle?
90 degreesThere are 90 degrees in a right angle.There are 90 degrees in a right angle
What transformation is represented by the rule (x y) (y -x)?
It is an anticlockwise rotation through 90 degrees.
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.
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 the image of point (-1-2) if the rotation is 90 degrees?
The answer will depend on whether the rotation is clockwise or counterclockwise.
Suppose a figure is located in quadrant 1. Which of the following will result in an image that is located in quadrant 3?
A) Rotate 360 degrees counterclockwise, then shift 1 unit up. B) Rotate 180 degrees counterclockwise, then shift 1 unit down. C)Rotate 90 degrees counterclockwise, then shift 1 unit up. D) Rotate 270 degrees counterclockwise, then shift 1 unit down.
What is the rule for a pair of perpendicular lines?
They intersect at 90 degrees
What is one fourth of a rotation going counterclockwise?
1/4 of 360 degrees = 90 degrees which is a right angle
What is the definition for east?
"East" is a directional term that refers to the direction you would face when observing the sun rise. It can also be found by rotating 90 degrees clockwise from north, or by rotating 90 degrees counterclockwise from south.
What is the rule for an obtuse triangle?
One angle must be over 90 degrees (an obtuse angle), and the other two angles under 90 degrees (acute angles). ^-^
