Answer:
5:8
Step-by-step explanation:
It would be the top right
because they are increasing by intervals of 4 each time. it can’t be the others because top left those are increasing by 5, bottom left decreasing by 4, and bottom right decreasing by .5.
That is an isosceles right triangle. (Also known as a 45 45 90 triangle).
Anything else to the problem?