Math Problem Statement

Write the coordinates of the vertices after a rotation 90° clockwise around the origin.

Solution

To solve this problem, we need to perform a 90-degree clockwise rotation of the vertices BB, CC, and DD around the origin.

The formula to rotate a point (x,y)(x, y) 90 degrees clockwise around the origin is:

(x,y)=(y,x)(x', y') = (y, -x)

Now let's apply this to each vertex:

Coordinates Before Rotation:

  • B: (6,6)(-6, -6)
  • C: (8,2)(-8, -2)
  • D: (2,8)(-2, -8)

Apply the Rotation:

  1. For BB (-6, -6): (x,y)=(6,6)(x', y') = (-6, 6) So, B=(6,6)B' = (-6, 6).

  2. For CC (-8, -2): (x,y)=(2,8)(x', y') = (-2, 8) So, C=(2,8)C' = (-2, 8).

  3. For DD (-2, -8): (x,y)=(8,2)(x', y') = (-8, 2) So, D=(8,2)D' = (-8, 2).

Final Coordinates After 90° Clockwise Rotation:

  • B=(6,6)B' = (-6, 6)
  • C=(2,8)C' = (-2, 8)
  • D=(8,2)D' = (-8, 2)

Would you like more details on the rotation process or have any questions?

Here are 5 related questions you might explore:

  1. How do you rotate points 90° counterclockwise instead of clockwise?
  2. How would the coordinates change after a 180° rotation?
  3. What is the effect of a reflection across the y-axis on the coordinates of the vertices?
  4. How would the transformation differ if rotating around a different point rather than the origin?
  5. How can you find the center of rotation if it’s not the origin?

Tip: When rotating clockwise, always switch the x and y coordinates and negate the original x-coordinate.

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Math Problem Analysis

Mathematical Concepts

Geometry
Coordinate Plane
Rotation

Formulas

(x', y') = (y, -x)

Theorems

Rotation Theorem (90° clockwise rotation)

Suitable Grade Level

Grades 7-10