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Show that the angles of an equilateral triangle are 60° each. Q.8

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Find the best solution of ncert class 9th chapter triangles . Please help me to solve this exercise 7.2 question number 8 . Find the best and easiest solution of this question , also find the easiest solution of this question.Show that the angles of an equilateral triangle are 60° each

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  1. Let ABC be an equilateral triangle as shown below:

    Ncert solutions class 9 chapter 7-16

    Here, BC = AC = AB (Since the length of all sides is same)

    ⇒ A = B =C (Sides opposite to the equal angles are equal.)

    Also, we know that

    A+B+C = 180°

    ⇒ 3A = 180°

    ⇒ A = 60°

    ∴ A = B = C = 60°

    So, the angles of an equilateral triangle are always 60° each.

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