Answer:∠ c = 29°Step-by-step explanation:∠ b and 97° are vertically opposite angles and are congruent , so∠ b = 97°the 3 angles in the triangle sum to 180° , that is54° + b + c = 180°54° + 97° + c = 180°151° + c = 180° ( subtract 151° from both sides )c = 29°