Calcular o perímetro do triângulo de vértices A (3,-1), B = (6, 3) e C (7,2
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A(3,-1)
B(6,3)
C(7,2)
d AB = √¨¨(XA - XB)² + (YA - YB)
dAB = √¨¨(3 - 6 )² + (-1 - 3 )
dAB = √(-3)² + ( - 4)²
dAB = √ 9 + 16
dAB = √25 = 5
dAC = √XA - XC)² + ( Y A - YC)²
dAC = √ (3 - 7 )² + (-1 - 2)²
dAC = √ (-4)² + ( -3 )²
dAC = √ 16 + 9
dAC = √ 25 = 5
dBC = √XB - XC)² + ( Y B - Y C)²
dBC = √(6 - 7 )² + (-1 - 2 )²
dBC = √(-1)² + (-3)²
d BC = √ 1 + 9
d BC = √ 10
Perímetro = 5 + 5 + √10
Perímetro = 10√10
B(6,3)
C(7,2)
d AB = √¨¨(XA - XB)² + (YA - YB)
dAB = √¨¨(3 - 6 )² + (-1 - 3 )
dAB = √(-3)² + ( - 4)²
dAB = √ 9 + 16
dAB = √25 = 5
dAC = √XA - XC)² + ( Y A - YC)²
dAC = √ (3 - 7 )² + (-1 - 2)²
dAC = √ (-4)² + ( -3 )²
dAC = √ 16 + 9
dAC = √ 25 = 5
dBC = √XB - XC)² + ( Y B - Y C)²
dBC = √(6 - 7 )² + (-1 - 2 )²
dBC = √(-1)² + (-3)²
d BC = √ 1 + 9
d BC = √ 10
Perímetro = 5 + 5 + √10
Perímetro = 10√10
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Olá Nina
A(3,-1) , B(6,3), C(7,2)
valor dos lados
dAB² = (Ax - Bx)² + (Ay - By)²
dAB² = (3 - 6)² + (-1 - 3)² = 9 + 16 = 25
AB = 5
dAC² = (Ax - Cx)² + (Ay - Cy)²
dAC² = (3 - 7)² + (-1 - 2)² = 16 + 9 = 25
AC = 5
dBC² = (Bx - Cx)² + (By - Cy)²
dBC² = (6 - 7)² + (3 - 2)² = 1 + 1 = 2
BC = √2
perimetro
p = AB + AC + BC = 5 + 5 + √2 = 10 + √2
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A(3,-1) , B(6,3), C(7,2)
valor dos lados
dAB² = (Ax - Bx)² + (Ay - By)²
dAB² = (3 - 6)² + (-1 - 3)² = 9 + 16 = 25
AB = 5
dAC² = (Ax - Cx)² + (Ay - Cy)²
dAC² = (3 - 7)² + (-1 - 2)² = 16 + 9 = 25
AC = 5
dBC² = (Bx - Cx)² + (By - Cy)²
dBC² = (6 - 7)² + (3 - 2)² = 1 + 1 = 2
BC = √2
perimetro
p = AB + AC + BC = 5 + 5 + √2 = 10 + √2
.
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