Respuesta :

choixongdong
180 - 56 = 124
124 / 2 = 62

2x = 62
  x = 31

answer
x = 31
hxleemx
A trigangle adds up to 180. Youve been given one lenght (56) so ud do 180 minus that lenght which would give you the answer of 124
Idek if im right tbhh