15.Show that the angles of an equilateral triangle xe 60° each.
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Step-by-step explanation:
Let take a triangle abc,
let take angle a = x
because abc is an equilateral triangle all the angles are equal .
Hence,
a = b = c = x
and by using the angle sum property of the triangle we get :-
a + b + c = 180
so keeping the value of a, b and c,
we get
x+x+x = 180
3x = 180
x = 180/3
x = 60 degree
and x = a = b = c
hence,
a = 60 degree
b = 60 degree
c = 60 degree
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