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Two angles of a triangle are 50° and 70°. What is the measure of the third angle?

  • A.50°
  • B.60°
  • C.70°
  • D.80°

Answer: B

\[ \angle C = 180^{\circ} - (50^{\circ} + 70^{\circ}) \]

\[ = 180^{\circ} - 120^{\circ} = 60^{\circ} \]

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