Is a rhombus equalateral

Answer 1

A rhombus has 4 equal sides but its 4 interior angles are not equal as in the case of a square which also has 4 equal sides

The above answer is true but incomplete. The word, equilateral, means "with sides of the same length" and, to that extent, a rhombus is equilateral. However, it is not equiangular. A triangle is is equilateral if and only if it is equiangular and this had (unfortunately) resulted in the words being used interchangeably. A polygon, with 4 or more sides can be equilateral without being equiangular of it can be equiangular without being equilateral. So, a rhombus is equilateral but not equiangular.