GIVEN:a regular polygon with vertices C1,C2.....,Cn are inscribed in a circle with centre C0. ques1)if n is a multiple of 6, then what is the total number of isosceles (including equilateral) triangles formed by joining the three points from C1,C2...........Cn . ques2)if n is an odd and multiple of 3, then what is the total number of isosceles (including equilateral) triangles formed by joining the three points from C1,C2...........Cn ques3)if n is an even and not multiple of 3, then what is the total number of isosceles (including equilateral) triangles formed by joining the three points from C1,C2...........Cn