Transformations/transl/ref
This type of transformation does not change the size or shape of the preimage when producing the image
Rigid Transformation
When mirror line is the x axis you change (x,y) to
(x,-y)
Order 2: ? degrees
180°
To rotate an image 90 degrees, what must you do to the x and y value of the coordinate pair?
(x,y) ---> (-y,x). Multiply y-value by -1 then
switch x and y values.
When mirror line is the y axis you change (x,y) to
(-x,y)
To rotate an image 270 degrees, what must you do to the x and y value of the coordinate pair?
(x,y)--->(y,-x). Multiply the x-value by -1
and then switch x and y values.
(8,2)
Translation (x+6,2 +y)
what are new coordinates
(14,4)
This type of transformation can change the size and shape, or size and shape of the preimage
Non rigid transformation
Translation occurs when a polygon moves
along a straight line
To rotate an image 180 degrees, what must you do to the x and y value of the coordinate pair?
(x,y)--->(-x,-y). Multiply the x and y values
by -1.
Point Symmetry is when every part has a matching part:
the same distance from the central point
but in the opposite direction.