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

positive: p > q
contrapositive: ~q > ~p
so, (1)