Rotations

Rotations

Assessment

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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