Question

plz answer question .no 18

Answer 1

x+y+z=180°(aspt)
72°+y+46°=180°
118°+y=180°
y=180°-118°
y=64°
y= 1/2×64°=32°
z= 1/2×46°=23°
then putting the value
y+z+o= 180°(aspt)
32°+23°+o=180°
55°+o=180°
o=180°-55°
o=125° ans.
I hope it helps you....