Verified answer

Answer:

first we have to add ALL ANGLES (SUM OF ALL FOUR SIDES)

NOM+NPM+PMO+PNO=360°

60°+NPM+90°+90°=360°

60+NPM+180=360°

240+NPM=360°

NPM=360°-240°

NPM=120°

Answer:

120

Step-by-step explanation:

angle nom =60°

angle pmo =90°

angle onp =90°

sum of following angle =240°

sum of interior angle of quadlilatetal =360°

therefore angle npm = 360° - 240°

= 120°