1. x = 35, Converse: If two lines are cut by a transversal so that alternate interior angles are congruent, then the lines are parallel.
2. x = 3, Converse: If two lines are cut by a transversal so that corresponding angles are congruent, then the lines are parallel.
3. x = 31, Converse: If two lines are cut by a transversal so that consecutive interior angles are supplementary, then the lines are parallel.
4. x = 10, Converse: If two lines are cut by a transversal so that alternate exterior angles are congruent, then the lines are parallel.
5. x = 6, Converse: If two lines are cut by a transversal so that corresponding angles are congruent, then the lines are parallel.
6. x = 19, Converse: If two lines are cut by a transversal so that alternate interior angles are congruent, then the lines are parallel.
7. x = 10, Converse: If two lines are cut by a transversal so that alternate interior angles are congruent, then the lines are parallel.
8. x = 13, Converse: If two lines are cut by a transversal so that consecutive interior angles are supplementary, then the lines are parallel.
9. x = 10, Converse: If two lines are cut by a transversal so that corresponding angles are congruent, then the lines are parallel.
10. x = 7, Converse: If two lines are cut by a transversal so that vertical angles are congruent, then the lines are parallel.
Parent Tip: Review the logic above to help your child master the concept of proving lines are parallel worksheet.