If 1 and 2 are supplementary angles then
- If 1 and 2 are supplementary angles then one of them must be obtuse
- If 1 and 2 are supplementary angles then one of them must be acute
- If 1 and 2 are supplementary angles then 1 and 2 form a linear pair
- If 1 and 2 are supplementary angles then one of the angles must be an obtuse angle
- Supplement of an angle
- Supplement and complement of an angle
- 1 and 2 are supplementary
- 1 and 2 are supplementary angles