Math Problem Statement

Give me the right answer

Dilate ΔABC with center P using a scale factor of 1/2. Show ALL work for full credit.

Solution

To solve the problem of dilating triangle ABC\triangle ABC with center PP using a scale factor of 12\frac{1}{2}, we will follow these steps:


Steps:

  1. Understand the dilation:
    Dilation with a center PP and scale factor 12\frac{1}{2} means each vertex of the triangle AA, BB, and CC will move closer to PP by halving the distance from PP to each vertex.

  2. Find the new coordinates:

    • Measure or determine the coordinates of points AA, BB, CC, and PP.
    • Use the formula for dilation: (x,y)=(xp+k(xxp), yp+k(yyp))(x', y') = \left( x_p + k(x - x_p),\ y_p + k(y - y_p) \right) where:
      • (x,y)(x, y): Original point
      • (xp,yp)(x_p, y_p): Center of dilation
      • kk: Scale factor (12\frac{1}{2})
  3. Apply the formula: Substitute the given scale factor k=12k = \frac{1}{2} into the formula for all three points A,B,A, B, and CC to find their new coordinates A,B,A', B', and CC'.

  4. Plot the new triangle:
    Draw the triangle ABC\triangle A'B'C' with the calculated points.


If you provide the coordinates of A,B,C,A, B, C, and PP, I can calculate the exact positions of A,B,A', B', and CC' for you. Alternatively, I can describe how to measure from the diagram to proceed. Let me know! 😊


Follow-Up Questions:

  1. What are the coordinates of points A,B,C,A, B, C, and PP?
  2. Do you want me to help you measure the distances manually from the diagram?
  3. Would you like a detailed example of how to use the dilation formula?
  4. Are you familiar with how to draw dilations accurately on paper?
  5. Should I explain how to find the midpoint geometrically for 12\frac{1}{2} dilations?

Tip:

When working with dilation, always check your scale factor to confirm if the new shape gets larger (k>1k > 1) or smaller (0<k<10 < k < 1).

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Math Problem Analysis

Mathematical Concepts

Geometry
Dilation
Scale Factor
Transformations

Formulas

(x', y') = (xp + k(x - xp), yp + k(y - yp))

Theorems

Dilation Theorem

Suitable Grade Level

Grades 8-10