Parallel Lines

 $Ifa||b\ and\ m\angle4=103\degree\ ,find\ m\angle6\ .$  

• 103

• 77

• cannot determine

 $Ifa||b\ and\ m\angle12=77\degree\ ,find\ m\angle13\ .$  

• 103

• 77

• cannot determine

 $Ifa||b\ and\ m\angle6=117\degree\ ,find\ m\angle16\ .$  

• 117

• 63

• cannot determine

 $Ifa||b\ and\ m\angle11=50\degree\ ,find\ m\angle5\ .$  

• 50

• 130

• cannot determine

 $Ifc||d\ and\ m\angle8\ =\ 89\degree\ ,find\ m\angle9\ .$  

• 89

• 91

• cannot determine

 $Ifc||d\ and\ \angle2\ and\ \angle16\ are...$  

• congruent

• supplementary

• cannot determine

 $Ifc||d\ and\ \angle10\ and\ \angle13\ are...$  

• congruent

• supplementary

• cannot determine

 $Ifc||d\ and\ m\angle7\ =\ 49\degree\ then\ the\ m\angle4\ is...$  

• 49

• 131

• cannot determine

 $a||b||c$   $Ifm\angle7=7x+19\ and\ m\angle11=9x-3,\ find\ x,\ m\angle9,\ and\ m\angle5.\ Select\ all\ three\ answers.$  

• 11

• 1

• 96

• 84

• 26

 $a\parallel b\parallel c.\ If\ m\angle2=4x-13\ and\ m\angle5=5x+4,\ find\ x,\ m\angle4,\ and\ m\angle8.$  

• 21

• -17

• 71

• 109

• 81