The diagram shows parallel lines cut by two transversal lines creating a triangle. Which statements are true? Check all that apply.
1. ∠A and ∠G are alternate interior angles.
2. ∠A, ∠F, and ∠E form a straight line.
3. ∠H and ∠A are corresponding angles.
4. ∠E and ∠C are vertical angles.
5. m∠G = m∠E
6. m∠F = m∠C