Rotations
Flashcard
•
Mathematics
•
8th Grade
•
Hard
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a rotation in geometry?
Back
A rotation in geometry 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.
Tags
CCSS.8.G.A.3
CCSS.HSG.CO.A.5
2.
FLASHCARD QUESTION
Front
What are the coordinates of a point after a 180° rotation about the origin?
Back
The coordinates of a point (x, y) after a 180° rotation about the origin are (-x, -y).
Tags
CCSS.8.G.A.3
CCSS.HSG.CO.A.5
3.
FLASHCARD QUESTION
Front
How do you determine the new coordinates of a point after a 90° clockwise rotation about the origin?
Back
To determine the new coordinates of a point (x, y) after a 90° clockwise rotation about the origin, the new coordinates will be (y, -x).
Tags
CCSS.8.G.A.3
CCSS.HSG.CO.A.5
4.
FLASHCARD QUESTION
Front
What is the angle of rotation for a counterclockwise rotation?
Back
The angle of rotation for a counterclockwise rotation is measured in degrees from the positive x-axis, moving in the direction of the positive y-axis.
Tags
CCSS.8.G.A.3
CCSS.HSG.CO.A.5
5.
FLASHCARD QUESTION
Front
What is the result of rotating the point (3, 4) 90° counterclockwise about the origin?
Back
The result of rotating the point (3, 4) 90° counterclockwise about the origin is (-4, 3).
Tags
CCSS.8.G.A.3
CCSS.HSG.CO.A.5
6.
FLASHCARD QUESTION
Front
What is the rule for rotating a point 270° counterclockwise about the origin?
Back
The rule for rotating a point (x, y) 270° counterclockwise about the origin is (y, -x).
Tags
CCSS.8.G.A.3
CCSS.HSG.CO.A.5
7.
FLASHCARD QUESTION
Front
What happens to the coordinates of a point when it is rotated 180° clockwise?
Back
When a point is rotated 180° clockwise, its coordinates change from (x, y) to (-x, -y).
Tags
CCSS.8.G.A.3
CCSS.HSG.CO.A.5
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