Identify the angle pair.

 $\angle1$  and  $\angle7$  

Identify the angle pair.

 $\angle13$  and  $\angle14$  

Identify the angle pair.

Identify the angle pair.

 $\angle5$  and  $\angle6$  

If  $m\angle8\ =\ 9x+15$  and  $m\angle6\ =\ 6x\ +45.$  

Set up your equation and solve for x.

 Set up your equation and solve for x.

If  $m\angle7\ =\ 35\degree,\$  then  $m\angle3\ =$  ________ $\degree$  

If  $m\angle5\ =56\degree,\$  then  $m\angle1\ =$  ________ $\degree$  

If  $m\angle1\ =\ 100\degree,\$  then  $m\angle4\ =\$  ________ $\degree$  

If  $m\angle7=30\degree,\$  then  $m\angle6\ =$  _________ $\degree$  

If  $m\angle3\ =\ 100\degree,\$  then  $m\angle1\ =\$  _________ $\degree$