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Show that the angles of an …

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Show that the angles of an equilateral triangle are 60° each

    • Posted by Tanya Zanzad 8 years, 7 months ago

    CBSE > Class 09 > Mathematics
    • 2 answers

    Anrag Singh 8 years, 7 months ago

    We know that in equilateral triangle all three sides are equal. Then, According to theorem: Angles opposite to equal sides are equal. So,By angle sum property of triangle. Then angle A+ angle B+ angle C equals to 180 degree. Now according to theorem A=B=C Let equals angle be x So, X+X+X=180 3X=180 X=180÷3 X=60 Proved...

    2Thank You

    Badal Gupta 8 years, 7 months ago

    We know that all side of this triangle is equal let them abc first take any side like a b ,ac so angle b and c will be same (angle opp to equal side ) than take BC, ac same angle a and b will with same reason so if angle a= b=c . hence proved

    4Thank You

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