triangle ABC has a perimeter 22cm AB=8cm BC=5cm by calculation, deduce whether ABC is a right angle triangle? ​

Question

triangle ABC has a perimeter 22cm
AB=8cm
BC=5cm
by calculation, deduce whether ABC is a right angle triangle? ​

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Ben Gia 4 years 2021-07-18T12:23:34+00:00 1 Answers 876 views 0

Answers ( )

  1. thachthao
    0
    2021-07-18T12:24:52+00:00
    Reply

    perimeter = AB + AC + BC
    22 = 8 + AC + 5
    AC = 9

    from phitagoras rule it states that
    if ABC is a right angle then

    9^2 = 8^2 + 5^2

    81≠89

    so its not right angelic

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