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Arjun measures the three angles of a triangular flag as 65°, 65° and 55° with his protractor.
He wonders whether the angle sum property is satisfied.
What is the total of the three measured angles?

Class 7Angle Sum PropertyTriangles
  • A175°
  • B180°
  • C185°
  • D190°

Step-by-Step Solution

65 + 65 + 55 = 185°. Since the sum is not 180°, his measurement has an error (a real triangle must total exactly 180°).
Answer: C) 185°

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