Math Problem Statement

What are the coordinates of the dilation of a square ABCD by a scale factor of 1/2?

Solution

To determine the coordinates of the dilation of square ABCDABCD by a scale factor of 12\frac{1}{2}, let’s follow these steps:

  1. Identify Original Points: First, we need to find the coordinates of each point AA, BB, CC, and DD of the square from the grid.
  2. Apply Dilation: Multiply each coordinate by the scale factor 12\frac{1}{2}.
    • For a point (x,y)(x, y), the dilated coordinates would be (x2,y2)\left( \frac{x}{2}, \frac{y}{2} \right).
  3. Match the Result: Compare the results with the answer choices provided.

Step-by-Step Solution:

Let’s go through each answer choice after determining the original coordinates of points AA, BB, CC, and DD. Here are the possible answers:

  1. (1,34),(2,2),(1,2),(1,2)(-1, \frac{3}{4}), (2, -2), (-1, -2), (-1, -2)
  2. (1,34),(2,32),(1,2)(1, \frac{3}{4}), (2, \frac{3}{2}), (1, -2)
  3. (8,8),(16,8),(16,16),(8,16)(-8, -8), (16, 8), (16, -16), (-8, -16)
  4. (0,0),(4,4),(0,4),(0,4)(0, 0), (4, 4), (0, -4), (0, -4)

Calculation:

Please confirm if you’d like to go through the solution with these steps, or if you need me to locate the coordinates directly for a quicker answer. Let me know if you have any questions!

Further Questions for Exploration:

  1. How does changing the scale factor impact the size and position of a shape?
  2. What happens to the orientation of a figure under a negative scale factor?
  3. Can you find examples where dilations are used in real life, like in architecture or art?
  4. How would the answer change if the center of dilation was not the origin?
  5. What is the effect of a dilation on the area and perimeter of a geometric shape?

Tip: Remember that dilations either enlarge or reduce shapes proportionally based on the scale factor.

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Math Problem Analysis

Mathematical Concepts

Geometry
Coordinate Geometry
Dilation
Scale Factor

Formulas

Dilation formula for coordinates: (x, y) -> (kx, ky), where k is the scale factor

Theorems

Dilation property: Transformation that scales distances from a center point

Suitable Grade Level

Grade 8