Do alternate angles add to 180
- Alternate angles add to 180
- Do alternate interior angles add up to 180
- Do alternate exterior angles add up to 180
- Do alternate interior angles add to 180
- Do alternate interior angles always add up to 180
- Do alternate interior angles add up to 180 degrees
- Do alternate exterior angles add to 180
- Do alternate angles add up to 180 degrees
- Do alternate angles always add up to 180
- Do alternate angles add up to 180