A square garden has the end points listed below. Plot and label these points on the grid:

A (−7, 6)B (−2, −6)C (10, −1)D (5, 11)

Connect the points to create Square ABCD
.
Use the Pythagorean Theorem to find the side length, s
, of Square ABCD
.
Use the area formula, A = s2
, to find the area of Square ABCD
.

1 answer

To proceed with your request, we need to first check if the points given form a square and then calculate the relevant properties if they do.

The points are:

  • A (-7, 6)
  • B (-2, -6)
  • C (10, -1)
  • D (5, 11)

Let's first find the distances between each pair of points to identify the sides and diagonals:

  1. Calculate the distances:

    Using the distance formula:
    \[ d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} \]

    • Distance \( AB \): \[ d_{AB} = \sqrt{(-2 - (-7))^2 + (-6 - 6)^2} = \sqrt{(5)^2 + (-12)^2} = \sqrt{25 + 144} = \sqrt{169} = 13 \]

    • Distance \( BC \): \[ d_{BC} = \sqrt{(10 - (-2))^2 + (-1 - (-6))^2} = \sqrt{(12)^2 + (5)^2} = \sqrt{144 + 25} = \sqrt{169} = 13 \]

    • Distance \( CD \): \[ d_{CD} = \sqrt{(5 - 10)^2 + (11 - (-1))^2} = \sqrt{(-5)^2 + (12)^2} = \sqrt{25 + 144} = \sqrt{169} = 13 \]

    • Distance \( DA \): \[ d_{DA} = \sqrt{(-7 - 5)^2 + (6 - 11)^2} = \sqrt{(-12)^2 + (-5)^2} = \sqrt{144 + 25} = \sqrt{169} = 13 \]

  2. Check Diagonal lengths:

    • Distance \( AC \): \[ d_{AC} = \sqrt{(10 - (-7))^2 + (-1 - 6)^2} = \sqrt{(17)^2 + (-7)^2} = \sqrt{289 + 49} = \sqrt{338} \]

    • Distance \( BD \): \[ d_{BD} = \sqrt{(5 - (-2))^2 + (11 - (-6))^2} = \sqrt{(7)^2 + (17)^2} = \sqrt{49 + 289} = \sqrt{338} \]

  3. Establishing characteristics of ABCD:

    • All four sides are equal (13), and the diagonals are equal (\(\sqrt{338}\)), which indicates that ABCD is a square.
  4. Finding the area:

    • The side length \( s \) is \( 13 \).
    • Area \( A \) can be calculated as: \[ A = s^2 = 13^2 = 169 \]
  5. Result summary:

    • Side length, \( s \): \( 13 \)
    • Area, \( A \): \( 169 \)

To visualize the square, plot the points A, B, C, and D on a coordinate grid. The square would have vertices at those coordinates, with the connections forming the sides and confirming it meets the properties described above.