Maths-
General
Easy

Question

If the perpendicular bisector of one side of a triangle goes through the opposite vertex, then the triangle is ____ isosceles.

  1. always
  2. never
  3. Sometimes

The correct answer is: always


    Answer:
    • Perpendicular bisector theorem
    • According to perpendicular bisector theorem, in the triangle, any point on perpendicular bisector is at equal distance from both end points of the line segment on which it is drawn.
    • Step by step explanation: 
    • Step 1:
    Let consider given figure,


    Let arbitrary point C on perpendicular bisector.
    In which,
    CD is perpendicular bisector on AB.
    Hence,

    AD = DB

    CD = CD (common)

    ADC = BDC = 90o
    So, according to SAS rule

    ACD  BCD

    Hence,

    CA = CB
    So, triangle is always isosceles.
    Hence proved.

    • Final Answer: 
    Correct option A always.

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