Lesson 1: Understand Rigid Transformations and their Properties
Center of Rotation
a fixed point around which a figure is rotated
Clockwise
in the direction of hands on a clock or toward the right from the top of a circle
Degree
a unit used to measure angles
Rotation
a transformation that turns a figure through a given angle and in a given direction around a fixed point
Image
a figure that results from a transformation or sequence of transformations
Counterclockwise
in the opposite direction of hands on a clock or toward the left from the top of a circle
the point where two rays, lines, or line segments meet to form an angle
Reflection
a transformation that flips a figure across a line to form a mirror image
Transformation
a change in location, orientation, or size of a figure
X-coordinate
the first number in an ordered pair. It tells the points horizontal distance from the y-axis
Congruent
same size and shape
Y-coordinate
the second number in an ordered pair. it tells the points vertical distance from the x-axis