Rotations

Flashcard
•
Mathematics
•
8th - 9th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a rotation in geometry?
Back
A rotation is a transformation that turns a figure around a fixed point, known as the center of rotation, by a specified angle in a specified direction.
2.
FLASHCARD QUESTION
Front
What does CCW stand for in rotations?
Back
CCW stands for Counter Clockwise, which is the direction of rotation that goes against the direction of the clock's hands.
3.
FLASHCARD QUESTION
Front
What is the rule for a 90° CCW rotation around the origin?
Back
(x,y) ----> (-y,x)
4.
FLASHCARD QUESTION
Front
What is the rule for a 90° CW rotation around the origin?
Back
(x,y) ----> (y,-x)
5.
FLASHCARD QUESTION
Front
What is the rule for a 180° rotation around the origin?
Back
(x,y) ----> (-x,-y)
6.
FLASHCARD QUESTION
Front
If point D is at (5,5), what is the image of D after a 180° rotation around the origin?
Back
D' (-5,-5)
7.
FLASHCARD QUESTION
Front
How do you determine the direction of rotation?
Back
The direction of rotation is determined by the angle and whether it is specified as clockwise (CW) or counterclockwise (CCW).
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