If one angle in a triangle is obtuse, then the triangle is not acute

Question

What is the contrapostive to this?

Answer 1

If A, then B

 

where:

A = One angle in a triangle is obtuse

B = the triangle is not acute

 

The Contrapositive is: If ~B, then ~A      (where ~ denotes negation or "not")

 

Can you finish it?