Answer:
option 2: 112°
Explanation:
IA = interior angle
IA1 + IA2 + IA3 = 180
IA1 = IA2
IA1 + IA1 +IA3 = 180
2IA1 + IA3 = 180
2(34)+ IA3 = 180
IA3 = 180 - 68
IA3 = 112°
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