A scalene triangle.
No figure other than a regular polygon is ever equiangular.
A rhombus is NEVER equiangular. If it were equiangular it would no longer be a rhombus but a square.
An irregular polygon need not be equiangular.
Having equal angles; as, an equiangular figure; a square is equiangular.
A regular polygon is always equiangular.
Yes, a regular polygon is always equiangular.
A rectangle is not always equilateral, although it is always equiangular. A rhombus is not always equiangular, but is always equilateral. A square is both equilateral and equiangular.
An irregular polygon
A square is always equiangular. This means that all the angles are equal and that is the case with any type of square.
Equiangular (not eqiangular) polygons are equiangular. These can be, but need not be, regular polygons.
rhombus
SQUARE