4.(i) By giving a counter example, show that the following statement is not true.
(i) p: If all the angles of a triangle are equal, then the triangle is an obtuse angled triangle.
We know, Sum of all the angles of a triangle =
If all the three angles are equal, then each angle is
But is not an obtuse angle, and hence none of the angles of the triangle is obtuse.
Hence the triangle is not an obtuse-angled triangle.
Hence the given statement is not true.
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