Math Problem Statement

Write the coordinates of the vertices after a rotation 270° counterclockwise around the origin.

Solution

To solve this problem, let’s walk through how to find the new coordinates after rotating the given points 270° counterclockwise about the origin.

Key Concept: Rotation by 270° Counterclockwise

  • A 270° counterclockwise rotation transforms a point (x,y)(x, y) to (y,x)(y, -x).

Now, let's extract the vertices from the graph shown in your image:

  1. Point R: (2,3)(-2, 3)
  2. Point S: (4,1)(-4, 1)
  3. Point T: (1,1)(-1, -1)
  4. Point U: (3,4)(-3, -4)

Rotation Calculation: 270° Counterclockwise

Using the transformation rule (x,y)(y,x)(x, y) \rightarrow (y, -x):

  • R(-2, 3)(3,2)(3, 2)
  • S(-4, 1)(1,4)(1, 4)
  • T(-1, -1)(1,1)(-1, 1)
  • U(-3, -4)(4,3)(-4, 3)

New Coordinates after 270° Counterclockwise Rotation

  • R': (3,2)(3, 2)
  • S': (1,4)(1, 4)
  • T': (1,1)(-1, 1)
  • U': (4,3)(-4, 3)

Let me know if you need more details or if anything is unclear!


5 Related Questions:

  1. What is the general formula for 90° and 180° rotations?
  2. How do clockwise and counterclockwise rotations differ?
  3. How do rotations affect the orientation of a shape?
  4. What are other transformations besides rotations (e.g., translations, reflections)?
  5. How would the coordinates change if the rotation was around a different point instead of the origin?

Tip: For easier rotation of coordinates, remember that a 270° counterclockwise rotation is equivalent to a 90° clockwise rotation.

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Math Problem Analysis

Mathematical Concepts

Geometry
Coordinate Transformations
Rotations

Formulas

Rotation by 270° counterclockwise: (x, y) → (y, -x)

Theorems

Rotation theorem: Rotating a point around the origin preserves distance but changes orientation

Suitable Grade Level

Grades 8-10