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Write the coordinates of the vertices after a rotation of 90 degrees counterclockwise around the origin.

Write the coordinates of the vertices after a rotation of 90 degrees counterclockwise-example-1
Write the coordinates of the vertices after a rotation of 90 degrees counterclockwise-example-1
Write the coordinates of the vertices after a rotation of 90 degrees counterclockwise-example-2
Write the coordinates of the vertices after a rotation of 90 degrees counterclockwise-example-3
User Zackify
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1 Answer

13 votes

Answer:

U(2, 7) → U'(-7, 2)

V(10, 7) → V'(-7, 10)

W(2, 3) W'(-3, 2)

Explanation:

From the picture attached,

Coordinates of the vertices of the given triangle,

U → (2, 7)

V → (10. 7)

W → (2, 3)

Since rule for the coordinates of a point P(x, y) after a rotation of 90° counterclockwise about the origin is,

P(x, y) → P'(-y, x)

Here point P is the preimage and P' is the image point after rotation.

By this rule,

U(2, 7) → U'(-7, 2)

V(10, 7) → V'(-7, 10)

W(2, 3) → W'(-3, 2)

User Alberto Alegria
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4.8k points