Adjacent Angles

Linear Pair

Complementary Angles

Supplementary Angles

Vertical Angles

$\angle8\ \ and\ \angle7$

$\angle8\ and\ \angle6$

$\angle8\ and\ \angle5$

 $\angle2$  

 $\angle3$  

 $\angle4$  

 $\angle5$  

 $\angle6$  

 $\angle2$  

 $\angle3$  

 $\angle4$  

 $\angle5$  

 $\angle1$  

 $\angle1$  

 $\angle5$  

 $\angle3$  

 $\angle6$  

 $\angle9$  

x = 118

x = 108

x = 28

x = 58

x = 62

20^o

70^o

160^o

180^o

obtuse

right

straight

acute

Vertical

Nothing

Adjacent

Supplementary

∠4

∠1

∠2

∠5