1)All of the angles have to add up to 180, so angle PON is 63 degrees and angle QOP is 96 degrees. All you have to do to find angle NOM is 180-63-96= angle NOM. Angle NOM= 21 degrees
2) 2x+12+x=180 and then solve from there.
x=56
Plug 56 back in for each angle
2(56)+12=124
x=56
