Another name for a flip is a _________________.
Draw an example of what you think this would look like.
On graph paper, create and label four sets of coordinate axes. Draw
the same polygon in the same position in a quadrant of each of the
four graphs. Write one of these four ordered pair rules below each
graph.
a. (x, y) --> (-x, y)
b. (x, y) --> (x, -y)
c. (x, y) --> (y, x)
d. (x, y) --> (-y, -x)
2. Use the ordered pair rule you assigned to each graph to relocate
the vertices of your polygon and create its image.
3. Use patty paper by tracing the original polygon to help determine if
the line of your reflection.
REFLECTION RULES
a. (x, y) --> (-x, y) is a _____________ over the ______________.
b. (x, y) --> (x, -y) is a _____________ over the ______________.
c. (x, y) --> (y, x) is a _____________ over the ______________.
d. (x, y) --> (-y, -x) is a _____________ over the ______________.
The coordinates for the first triangle are given
below. Draw the figure
on the coordinate plane at the right.
Determine what the coordinates would be using one
of your rules.
Reflect it over the y-axis and check to see if your
coordinates were correct!
Pre-Image (x, y)
Image (x’, y’)
A: (3, 5)
A’:
B: (5, 2)
B’:
C: (4, -2)
C’:
Examples:
Reflect over y = x
Reflect over x = 1
Reflect over the x-axis and then the y-axis.
Reflect over y = -1