The following propositions: 1) the vertex angles are equal; 2) the two base angles of isosceles triangle are equal; 3) the two straight lines are parallel and the apposition angles are equal Among them, the converse proposition is the true proposition_______ Why not?

The following propositions: 1) the vertex angles are equal; 2) the two base angles of isosceles triangle are equal; 3) the two straight lines are parallel and the apposition angles are equal Among them, the converse proposition is the true proposition_______ Why not?

The converse proposition is to change the condition in the original proposition into a conclusion and the conclusion into a condition
The converse proposition of equal vertex angle is: equal angle is opposite vertex angle. Of course, it is wrong