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In the arrowhead ABDC, ∠BDC = 120°, ∠A = 60° and ∠ABD = 25°. Find ∠ACD.

Class 9Exterior Angle of a TriangleGeometry — Lines and Angles
  • A95°
  • B55°
  • C45°
  • D35°

Step-by-Step Solution

For an arrowhead, ∠BDC = ∠A + ∠ABD + ∠ACD. So 120° = 60° + 25° + ∠ACD and ∠ACD = 35°.
Answer: D) 35°

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