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Geometry
Angles and Measures
Angle relationships
If m∠BOA is 180° and m∠BOC is 110° , what is the measure of ∠COA ?(1 point)
1 answer
The sum of the measures of the angles of a triangle is 180°. Since ∠BOA is 180°, we know that ∠BOC + ∠COA = ∠BOA. Therefore, 110° + ∠COA = 180°. Solving for ∠COA, we get ∠COA = 180° - 110° = 70°.
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