(i) A triangle is equiangular implies that it is an obtuse angled triangle. (ii) A triangle is equiangular only if it is an obtuse angled triangle. (iii) For a triangle to be equiangular, it is necessary that it is an obtuse angled triangle. (iv) For a triangle to be obtuse angled triangle, it is sufficient that the triangle is equiangular. (v) If a triangle is not obtuse angled triangle, then it is not equiangular.