Question

calcular o perimetro e classifique ,quanto aos lados , os triangulos ABC ,cujo vertices sao A(0,0),B(3,2),C(-1,4).

Answer 1

Olá Vivianne

A(0,0),B(3,2),C(-1,4)

dAB² = (Ax - Bx)² + (Ay - By)²
dAB² = (0 - 3)² + (0 - 2)² 
dAB² = 9 + 4 = 13

AB = √13 

dAC² = (Ax - Cx)² + (Ay - Cy)²
dAC² = (0 + 1)² + (0 - 4)²
dAC² = 1 + 16 = 17 

AC = √17

dBC² = (Bx - Cx)² + (By - Cy)²
dBC² = (3 + 1)² + (2 - 4)²
dBC² = 16 + 4 = 20

BC = 2√5 

perimetro

P = √13 + √17 + 2√5 = 12.2 

triangulo escaleno 

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