The distance of point (a,b)(a, b)(a,b) from the origin is:
a+ba + ba+b
a2+b2a^2 + b^2a2+b2
sqrta2+b2\\sqrt{a^2 + b^2}sqrta2+b2
∣a∣+∣b∣|a| + |b|∣a∣+∣b∣