Transformations on Coodinate Plane

By:Matthew Peterson

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A reflection is an isometry, which means the original and image are congruent, that can be described as a "flip". To perform a geometry reflection, a line of reflection is needed; the resulting orientation of the two figures are opposite.

All i did was just flip it over the Y axis and i did was change the first number to a - then keep the second one the same. x(_,_) X'(_-,_)

A(5,8) A'(-5,8)

B(5,4) B'(-5,4)

C(2,4) C'(-2,4)

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Dilation is where the polygon grows or shrinks but keeps the same overall shape. It's a little like zooming in or out on a camera. In the figure above, the polygon is a rectangle ABCD. As you adjust the slider on the right, the transformed rectangle A'B'C'D gets bigger and smaller, but remains the same shape.

i used my a scale factor of 4 starting point A. B x 4 C x 4

A(1,1) A'(1,1)

B(1,3) B'(1,9)

C(3,1) C'(9,1)

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  1. The point of rotation is the central point around which a figure is rotated.

  2. i used (0,0) as the point of rotation and i knew that the ( , ) would both change to the opposite.

  3. A(2,2) A'(-2,2)

  4. B(8,6) B'(-6,8)

  5. C(2,10) C'(-10,2)

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