Rotations Flashcards
1
Q
r180°,0 (x,y)
A
(-x,-y) negate x and y
2
Q
r270°,0 (x,y)
A
(y,-x) switch and negate x
3
Q
r90° (x,y)
A
(-y,x) switch and negate y
4
Q
r-90°
A
Same as r270°
r180°,0 (x,y)
(-x,-y) negate x and y
r270°,0 (x,y)
(y,-x) switch and negate x
r90° (x,y)
(-y,x) switch and negate y
r-90°
Same as r270°