If you dilate triangle ABC to form X'Y'Z' using a magnitude of 2 and a center of dilation at (2,0), what are the coordinates of the dilated triangle? (1 point) Responses A' (1.5,3), B' (2.5,0), C' (4,2) A' (1.5,3), B' (2.5,0), C' (4,2) A' (0,12), B' (4,0), C' (10,8) A' (0,12), B' (4,0), C' (10,8) A' (.5,3), B' (1.5,0), C' (3,2) A' (.5,3), B' (1.5,0), C' (3,2) A' (2,12), B' (6,0), C' (12,8)

A=(1,6) B=(3,0) C=(6,4)

1 answer

To find the coordinates of the dilated triangle X'Y'Z', we need to apply the dilation transformation on each vertex of triangle ABC. The formula for dilation with a center (x_c, y_c) and a scale factor \( k \) is given by:

\[ (x', y') = (x_c + k(x - x_c), y_c + k(y - y_c)) \]

Given your triangle vertices:

  • \( A(1, 6) \)
  • \( B(3, 0) \)
  • \( C(6, 4) \)

And the center of dilation at \( (2, 0) \) with a magnitude (scale factor) of \( 2 \), we can calculate the new coordinates for each vertex.

1. For vertex A(1, 6): \[ x' = 2 + 2(1 - 2) = 2 + 2(-1) = 2 - 2 = 0 \] \[ y' = 0 + 2(6 - 0) = 0 + 2(6) = 0 + 12 = 12 \] So, \( A' = (0, 12) \).

2. For vertex B(3, 0): \[ x' = 2 + 2(3 - 2) = 2 + 2(1) = 2 + 2 = 4 \] \[ y' = 0 + 2(0 - 0) = 0 + 2(0) = 0 + 0 = 0 \] So, \( B' = (4, 0) \).

3. For vertex C(6, 4): \[ x' = 2 + 2(6 - 2) = 2 + 2(4) = 2 + 8 = 10 \] \[ y' = 0 + 2(4 - 0) = 0 + 2(4) = 0 + 8 = 8 \] So, \( C' = (10, 8) \).

Putting it all together, the coordinates of the dilated triangle \( X'Y'Z' \) are:

  • \( A' = (0, 12) \)
  • \( B' = (4, 0) \)
  • \( C' = (10, 8) \)

Therefore, the correct response is: A' (0,12), B' (4,0), C' (10,8).