Supplementary & Complementary Angles

 $\overrightarrow{AB}$  

 $\overline{AB}$  

two angles are complimentary when adding their measure of degree together equals 90.

two angles are supplementary angles when adding their measure of degree equals 180.

We know that these two angles are supplementary angles because added together they will equal 180 degrees (a straight line). To solve this equation, add both of these expressions together and set them equal to 180.
 $2x+3+x-6=180$  

Use the image on the right to answer the following question on the next slide