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What is the angle of rotation from figure D to figure D’ ? Assume that the center of rotation is the origin.

A. 270° clockwise
B. 90° clockwise
C. 90° counterclockwise
D. 180° counterclockwise

What is the angle of rotation from figure D to figure D’ ? Assume that the center-example-1

2 Answers

5 votes

Answer:

B. 90 clockwise

Explanation:

User Pierre Henry
by
5.0k points
4 votes

Answer:

Option B.

Explanation:

We take a point D from the figure attached,

Coordinates for the point D → (-1.5, 3.5)

And coordinates of D' → (3.5, 1.5)

Coordinates of D when rotated about the origin,

Option A. Rotated by 270° clockwise.

Rule to be followed,

D(x, y) → D'(-y, x)

D(-1.5, 3.5) → D'(-3.5, -1.5)

Therefore, Option A. is incorrect

Option B. rotation by 90° clockwise

Rule to be followed

D(x, y) → D'(y, -x)

D(-1.5, 3.5) → D'(3.5, 1.5)

Therefore, Option B. is correct.

Option C. 90° counterclockwise

Rule to be followed,

D(x, y) → D'(-y, x)

D(-1.5, 3.5) → D'(-3.5, -1.5)

This option C is incorrect.

Option D. 180° counterclockwise

Rule to be followed,

D(x, y) → D'(-x, -y)

D(-1.5, 3.5) → D'(1.5, -3.5)

Therefore, option D is incorrect.

User Dominik Chudy
by
4.9k points