Unit 3: Transformations & Congruence
Rotation of 180 degrees counterclockwise (a,b)
(-a,-b)
Reflect in the y-axis (a,b)
(-a,b)
Reflect in y=-x axis
(-b,-a)
Rotation of 90 degrees counterclockwise (a,b)
(-b,a)
Reflect off of the y-axis (a,b)
(a,-b)
Rotation of 270 degrees counterclockwise (a,b)
(b,-a)
Reflect in the y=x axis
(b,a)
Glide Reflection
A composition of transformations that indicates a translation followed by a reflection
Corresponding Angles
A pair of angles that have the same relative position in congruence or similar figures
Corresponding Sides
A pair of sides that have the same related position in congruent figures
Composition of Transformations
A preimage can map an image through a combination of transformation
Reflection
A transformation over a line is a transformation in which each point of the original figure has an image that is the same distance from the of the other
Translation
A transformation that moves every point of a figure the same distance in the same direction
Isometry
A transformation that preserves length, angle measures, parrell lines, a distance between points or a figure
Rotation
A transformation that turns a figure about a fixed point called the center of rotation figures can be turned clockwise or clockwise
Rotation
A transformation that turns a figure about a fixed point called the center of rotation. Figures can be turned clockwise or counterclockwise
Transformation
An operation that maps moves or changes a geometric figure in a new figure
Rigid Motion
The action of moving a geometric figure without alltering its shape or size
Line of Symmetry
The line where you could fold the image and have two halves both halves match exactly
Angle of Roation
The measure of the angle by which a figure is rotated such that the preimage is the image
Congruent
figures that have corresponding sides and angles
Rotational Symmetry
if there is a center point around which the object is turned "theta" and the object looks the same It has
