A parallelogram with equal angles.
And when a parallelogram has equal angles, it has equal sides as well.
A rhombus
All sides are equal in length
A rhombus is always equilateral. It need not be equiangular, but if it is, then most people look at it and call it a "square".
No, an equilateral triangle has to be equiangular, but an equiangular triangle does NOT have to be equilateral
Having equal angles; as, an equiangular figure; a square is equiangular.
Squares are equilateral and equiangular.
No.
Angles cannot be equiangular: the latter is a property of polygons. Equiangular polygons are ones in which all the angles are equal.
A rhombus is NEVER equiangular. If it were equiangular it would no longer be a rhombus but a square.
A regular polygon is always equiangular.
An irregular polygon
Yes they normally are equiangular if the sides are equilateral