To find the perimeter of the rectangle given the vertices at coordinates (1,2), (1,6), (5,6), and (5,2), we first need to determine the lengths of the sides.
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Length of the vertical sides:
- The y-coordinates of points (1,2) and (1,6) give a vertical distance of: \[ 6 - 2 = 4 \]
- This is the height of the rectangle.
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Length of the horizontal sides:
- The x-coordinates of points (1,2) and (5,2) give a horizontal distance of: \[ 5 - 1 = 4 \]
- This is the width of the rectangle.
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Calculating the perimeter: The perimeter \( P \) of a rectangle is calculated with the formula: \[ P = 2(\text{length} + \text{width}) \] Substituting the respective values: \[ P = 2(4 + 4) = 2 \times 8 = 16 \]
Thus, the perimeter of the rectangle is 16.0 units.