two angles that are non-adjacent and whose non-common sides form a straight line.

two angles that are adjacent and whose non-common sides form a straight line.

two angles that are non-adjacent and whose common sides form a straight line.

two angles that are adjacent and whose non-common sides form a straight line.

 $\angle2\ and\ \angle5$  

 $\angle1\ and\ \angle2$  

 $\angle1\ and\ \angle4$  

 $\angle2\ and\ \angle3$  

122

142

132

128

$133\degree$

$143\degree$

$147\degree$

$137\degree$

88

78

84

74

24

34

44

54

108 $\degree$  

122 $\degree$  

112 $\degree$  

172 $\degree$  

A linear pair creates a 180 degree angle.

A linear pair is made using three or more angles.

A linear pair is created using two adjacent, supplementary angles.

A linear pair creates a line.