Transformations
a transformation can change _______ of a figure
position
an angle greater than
90^@
Obtuse
any two angles whose sum is
90^@
Complementary Angles
The Two lines on a graph that you use to find coordinates.
X-axis and Y-axis
a flip over a line called the line of reflection
Reflection
an angle that is equal to
90^@
Right
Adjacent Angles
The name of a figure after a tranformation has happened.
Image
When preforming a reflection over the Y axis, what happens to your (x,y) coordinates
Hint: Think of the reflection rules
(x,-y)
an angle less than
90^@
Acute
any two angles whose sum is
180^@
Supplementary Angles
The original figure in a transformation.
preimage
to vertically and/or horizontally slide a figure
Translation
Fill in the blank: an angle is formed by two ______ with a common endpoint
two angles across from each other on intersecting lines. They are always congruent!
Vertical Angles
A line that acts as a mirror and reflects an image for a transformation.
line of reflection
Looking at the preimage and image coordinates of triangle abc, determine which line of reflection was used to preform this transformation.
A(3,7) B(10,5) C(-1,-6) D(7,6)
A'(7,3) B(5,10) C(-6,-1) D(6,7)
Y=X
the middle letter of an angle must always represent the ________
vertex
Two angles that are adjacent and supplementary. They form a straight line!
Linear Pair
The SYMBOL used to represent a figure after a transformation.
Prime