A counterclockwise rotation of 90° is the same as how many degrees of rotation clockwise?
270 degrees
the line a figure is reflected over
What is the line of reflection
Triangle B is rotated 270° clockwise with the origin as the center of rotation to create a new figure. What rule describes this transformation?
(x,y)→(-y,x)
Give an example of a translation in everyday life.
tiles,
Give one real life example of a reflection.
ocean
What is the mirror line of a reflection called
LINE OF SYMMETRY
A point about which a figure is rotated
Centre of rotation
G (-2,1) --> G' (4,-5) F (-5,4) --> F' (_,_)
What is (1,-2)
If the coordinates of point P are (2, -3) , then R90 then R180 is
(-3, -2)
The coordinates of triangle JRB are ,J(1, -2) , R(-3, 6) and B(4, 5) . What are the coordinates of its image after the transformation (x, y) ->(x+2, y-1) then reflect over the y-axis
J"(-3, -3), R"(1, 5), B"(-6, 4)
What is the ordered pair for the final location of
P( 2, 3) after this series of transformations? (x,y)→(x+2, y−4) then reflected over the y-axis?
P′(−4, −1)
You are using a magnifying glass. Use the length of the insect and the magnification level to determine the length of the image seen through the magnifying glass.
Original length = 60mm
Magnification= 5 X
300 mm
a change in position where the distance between points is preserved and figures remain congruent (having the same size and shape).
Rigid Motion
What is the ordered pair for the final location of P( -7, 3) after this series of transformations?
(x,y)→(x, y+3) then rotated 90° clockwise about the origin.
P′(6, 7)