Respuesta :

measure with a metric ruler if straight line is curved use string. then measure length of string.  
apologiabiology
if you have the points
(x₁,y₁) and (x₂,y₂)
the distance between them is

distance=[tex] \sqrt{(x_2-x_1)^2+(y_2-y_1)^2} [/tex]

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