This is part of our Maths HW for Geometry. I'm really struggling with it. Can anyone please help?
[ΔA'B'C'] / [ΔABC] = 12 / 1
I used a right-angled isosceles triangle with the legs of 1 unit.
I found my error
[ΔA'B'C'] / [ΔABC] = 13 / 1