Which statement is contrapositive of the conditional: If a triangle is isosceles, then it has 2 congruent sides.

Question

1. If a triangle does not have 2 congruent sides, then it is not isosceles.
2. If a triangle is isosceles, then it does not have 2 congruent sides.
3. If a triangle has 2 congruent sies, then it is isosceles.
4. If a triangle is not isosceles, then it does not have 2 congruent sides.

Answer 1

positive: p -> q
contrapositive: ~q -> ~p

so, (1)

Answer 2

Help me this is not funny