**Rotation**and translation are affine transformations. So if you have a set of points... will be the same as the corresponding two points in Y. So, in summary, rotations and translations are affine transformations and therefore: 1) Angles are...2 Answers · Science & Mathematics · 14/12/2008

The demonstration below that shows you how to easily perform the common Rotations (ie

**rotation**by 90 , 180 , or**rotation**by 270) . There is a neat 'trick...1 Answers · Science & Mathematics · 01/11/2012

For a two dimensional column vector v: [x] = v [y] The rotation matrix A(θ) is: [.cos(θ) sin(θ)] = A(θ) [-sin(θ) cos(θ...

2 Answers · Science & Mathematics · 19/01/2008

... said that a point is a 'center of

**rotation**' for a system of particles 's movement, the...necesary and sufficient condition for O being a center of**rotation**is: xi'.xi=xi.O for each i where '...4 Answers · Science & Mathematics · 15/12/2006

Unless otherwise directed, rotations are always counter-clockwise. So you just turn the paper pivoting...

2 Answers · Science & Mathematics · 14/12/2006

... To find the new coordinates (assuming that the

**rotation**is counter clock wise) sin 30 = y / 50 1/2 = y / 50 2y = 50 y = 50/2 y...1 Answers · Education & Reference · 30/04/2008

If the point (x,y) is in quadrant I, then (-x,-y) is in quadrant III Try plotting (3,4) and (-3, -4) and see that the CCW or clockwise

**rotation**about the origin (0,0) is 180 degrees.1 Answers · Science & Mathematics · 11/10/2012

The matix multiplication for

**rotation**by 45 deg anticlockwise on this line is (1/sqrt2 -1/sqrt2)(x.......)....(X...1 Answers · Science & Mathematics · 28/02/2010

A

**rotation**is exactly what it sounds like . . . a**rotation**. Think...direction. Now, there are a couple of ways to draw a**rotation**. One is to draw the line from the point R to one of...1 Answers · Education & Reference · 20/04/2009

To get back to C the

**rotation**must be a multiple of 360 degrees. Since you have ruled out...2 Answers · Science & Mathematics · 22/04/2009