Studied by 4 peoplepre-image
original figure before the transformation
image
new figure after transformation
isometry
when the pre-image is congruent to the image
prime notation
A > A’
vector form
translation
all pts move the same distance in the same direction
reflection
a mirror image or a flip over a line where each point of the pre-image is the same distance from the line of symmetry as its corresponding point on the image
reflection over y=x
(x,y) > (y,x)
reflection over y=-x
(x,y) > (-y,-x)
rotation
transformation where you turn a figure about a fixed pt
dilation
transformation that produces an image that is the same shape as the pre-image, but a different size
scale factor
multiplication factor of “k”
to find k
original x k = new
enlargement
k>1
reduction
0<k<1
center of dilation
a fixed point in the plane about which all pts are expanded or contracted
Note
Flashcard