8.3- Rotations

8.3- Rotations

Assessment

Flashcard

Mathematics

9th Grade

Hard

Created by

Wayground Content

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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, called the center of rotation, by a certain angle in a specific direction.

2.

FLASHCARD QUESTION

Front

What is the angle of rotation for a 180° rotation?

Back

A 180° rotation turns a figure halfway around the center of rotation, resulting in the figure being flipped to the opposite side.

3.

FLASHCARD QUESTION

Front

What is the rule for rotating a point 90° counterclockwise?

Back

The rule for rotating a point (x, y) 90° counterclockwise is (x, y) --> (-y, x).

4.

FLASHCARD QUESTION

Front

What is the rule for rotating a point 180°?

Back

The rule for rotating a point (x, y) 180° is (x, y) --> (-x, -y).

5.

FLASHCARD QUESTION

Front

What is the rule for rotating a point 90° clockwise?

Back

The rule for rotating a point (x, y) 90° clockwise is (x, y) --> (y, -x).

6.

FLASHCARD QUESTION

Front

How do you determine the center of rotation?

Back

The center of rotation is the fixed point around which the figure rotates. It can be any point in the plane.

7.

FLASHCARD QUESTION

Front

What happens to the coordinates of a point when it is rotated 90° counterclockwise?

Back

The coordinates of a point (x, y) become (-y, x) after a 90° counterclockwise rotation.

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