ABC is a right angle of an isosceles triangle ∆ABC. BD is perpendicular to AC. Which of the following if any is not a 45° angle?

গণিত Geometry 07 Oct, 2020

প্রশ্ন ABC is a right angle of an isosceles triangle ∆ABC. BD is perpendicular to AC. Which of the following if any is not a 45° angle?

  • ক.
    ∠BAD
  • খ.
    ∠BCD
  • গ.
    ∠CBD
  • ঘ.
    ∠ABD

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