Question

I’m so confused on this. Someone please help, please and thank you <3

Answer 1

Step-by-step explanation:

The formula of a distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

We have

A(0, 0), C(a, b)

$AC=\sqrt{(a-0)^2+(b-0)^2=\sqrt{a^2+b^2}$

B(a, 0), D(0, b)

$BD=\sqrt{(0-a)^2+(b-0)^2}=\sqrt{(-a)^2+b^2}=\sqrt{a^2+b^2}$

Therefore AC = BD.