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anonymous

  • one year ago

A triangle has vertices at (2, 4), (-3, -6), and (4, -2). Find its perimeter rounded to two decimal places.

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  1. welshfella
    • one year ago
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    use the distance formula for 2 points sqrt [(y2-y1)^2 + (x2-x1)^2 ]

  2. welshfella
    • one year ago
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    where the 2 points are (x1,y1) and (x2,y2)

  3. welshfella
    • one year ago
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    so for the 2 points (2,4) and (-3,-6) the distance between them is sqrt [(4-(-6))^2 + (2-(-3)^2]

  4. welshfella
    • one year ago
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    do the same for the other 2 sides of the triangle and add them all up

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