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In a triangle, the second angle is 20° more than the first, and the third angle is 20° more than the second.
Find the three angles.

Class 7Angle Sum PropertyTriangles
  • A40°, 60°, 80°
  • B50°, 60°, 70°
  • C30°, 50°, 100°
  • D45°, 65°, 85°

Step-by-Step Solution

Let first = . Then angles are . Sum: . Angles: 40, 60, 80°.
Answer: A) 40°, 60°, 80°

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