Answer
Explanation
The distance between two points with the coordinates a(x₁, y₁) and b(x₂, y₂) is given as
ab = √[(x₂ - x₁)² + (y₂ - y₁)²]
a(x₁, y₁) and b(x₂, y₂) = a (-1, 2) and b (1, -2)
x₂ = 1
x₁ = -1
y₂ = -2
y₁ = 2
ab = √[(x₂ - x₁)² + (y₂ - y₁)²]
ab = √[(1 - (-1))² + (-2 - 2)²]
ab = √[(1 + 1)² + (-2 - 2)²]
ab = √[(2)
