Answer:
103
Explanation:
For any Triangle, The Sum of Interior Angles = 180°
So, For Triangle ABC ---> m∠A + m∠B + m∠C = 180°
By Substituting by the Givens m∠A =68 and m∠B=9
68 + 9 + m∠C = 180
77+ m∠C=180
Subtract 77 from both Sides
m∠C=180-77=103°
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