Question

Calcule a distância entre os pontos: A(5,2) e B(1,3), A(-1,4) e B(-2,-3), A(-4,-3) e B(0,0), A(-5,4) e B(2,-5), A(-1,5) B(-1,12).

Answer 1

D² = ( xb - xa )² + ( yb - ya )²

1- A(5,2) e B(1,3)

D² = ( 1 - 5 )² + ( 3 - 2 )²

D² = 16 + 1

D = √17

2- A(-1,4) e B(-2,-3)

D² = ( -2 + 1 )² + ( -3 - 4 )²

D² = 1 + 49

D = √50 .. 5√2

3- A(-4,-3) e B(0,0)

D² = ( 0 + 4 )² + ( 0 + 3 )²

D² = 16 + 9

D = √25

D = 5

4- A(-5,4) e B(2,-5)

D² = ( 2 + 5 )² + ( -5 - 4 )²

D² = 7² + ( -9 )²

D² = 49 + 81

D = √130 

5- A(-1,5) e B(-1,12)

D² = ( -1 + 1 )² + ( 12 - 5 )²

D² = 49

D = 7