A group of transformations that preserves distance and angles measures
What is Rigid Motion or Transformation
What is another word for Translation?
Slide
What is the rule for a 180 degree rotation CW?
(x, y) --> (-x, -y)
Identify the x-axis and the y-axis on the graph.

Two or more lines that never intersect
What is parallel lines
What do you need to know to do a translation?
Direction left/right and direction up/down of vector
Rotate (-8,7) 90 degrees C.C.W. What are the coordinates?
(-7,-8)
Reflect the point (2, 1) across the y-axis. What are the coordinates?
(-2, 1)
Same size and shape
congruent
Translate the point (3, 2) up 4 units and left 8 units. What are the coordinates?
(-5, 6)
Rotate (-2,-3) 180 degrees C.W. What are the coordinates?
(2, 3)
Reflect the point (8, -6) across the y-axis. What are the coordinates?
(-8, -6)
The image of U after some transformation.
U' or U prime
Translate the point (3, 2) down 2 units and left 4 units. What are the coordinates?
(-1, 0)
Rotate (1, 0) 90 degrees C.W. What are the coordinates?
(0, -1)
Reflect the point (2, 1) across the x-axis. What are the coordinates?
(2, -1)
360
Translate the point (-4, -7) up 14 units and right 9 units. What are the coordinates?
(5, 7)
Rotate (21.5, -7) 90 degrees C.C.W. What are the coordinates?
(7, 21.5)
Reflect the point (14, 14) across the x-axis. What are the coordinates?
(14, -14)