Answer:
1. 150 degree
2. angle igh and congruent fgi
Step-by-step explanation:
1. because the sum of angles in plane is 180
jgf+jgh=180
or jgh = 150 (jgf= 30)
2. angle igh because vertically opposite angles are equal
angle fgi because congruent angles have same value
Hope it helps : )
