Writing Proofs: Line and Angle Theorem

2-4 Angle Proofs

Part 2

Multiple Select

Select all true statements about complementary angles. 

• If $$m\angle A\ +\ m\angle B\ =90\degree$$ , then the angles are complementary 

  
  

• If  $$\angle A\ and\ \angle B$$  are complementary then  $$m\angle A\ +\ m\angle B\ =90\degree$$  

• If  $$\angle A\ and\ \angle B$$  are complementary, then the angles are linear pairs. 

• If $$m\angle A\ +m\angle B=90\degree$$ , then the angles are supplementary.  

Multiple Select

Select all true statements about supplementary angles. 

• If $$m\angle A\ +\ m\angle B\ =180\degree$$ , then the angles are complementary 

  
  

• If  $$\angle A\ and\ \angle B$$  are supplementary, then  $$m\angle A\ +\ m\angle B\ =180\degree$$  

• If  $$\angle A\ and\ \angle B$$  are supplementary, then the angles are linear pairs. 

• If $$m\angle A\ +m\angle B=180\degree$$ , then the angles are supplementary.  

Multiple Choice

What is a linear pair?  

• Two adjacent angles

• Supplementary angles

• Two adjacent supplementary angles

• Two adjacent complementary angles

Multiple Choice

If

$$\angle1\ and\ \angle2$$  are vertical angles, what do I know about the angles? 

• $$\angle1\ and\ \angle2$$  are supplementary

• $$\angle1\ and\ \angle2$$  are congruent

• $$\angle1\ and\ \angle2\ are\ complementary$$