If m∠BOA is 180° and m∠BOC is 110° , what is the measure of ∠COA ?(1 point)
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If m∠BOA is 180° and m∠BOC is 110°, then we can use the fact that the sum of the angles in a triangle is 180°. Since ∠BOA is 180°, this means that ∠COA + ∠BOC = 180°.
We can substitute the given values to find the measure of ∠COA:
∠COA + 110° = 180°
Subtracting 110° from both sides:
∠COA = 180° - 110°
∠COA = 70°
Therefore, the measure of ∠COA is 70°.