GEO #5 Transformations

Front

Translate

Back

a transformation that slides the figure to a new location on the coordinate plane

Front

reflection

Back

a transformation that flips the figure over a given line on the coordinate plane

Front

Reflection over the y-axis.

Back

r(x, y) = (-x, y)

Front

reflection over the x-axis

Back

r(x, y) = (x, -y)

Front

Rotation

Back

a transformation that turns a figure around the coordinate plane clockwise or counterclockwise

Front

rotation 270° counterclockwise

Back

R270CCW(x, y) = (y, -x)

Front

lines of symmetry

Back

lines drawn that cut a shape in half

Front

angles of rotation

Back

divide 360 degrees by the number of lines of symmetry

Front

scale factor

Back

if the scale factor is:

bigger than 1, it is an enlargement

less than 1, it is a reduction

equal to 1, stays the same

Front

Dilation

Back

multiply (x, y) pairs by the scale factor