A quadrilateral with four equal sides and no right angles is known as what?

A quadrilateral that has four equal sides and no right angles is defined as a rhombus. The unique characteristic of a rhombus is that while all four sides are of equal length, the angles are not necessarily right angles, which differentiates it from shapes like squares and rectangles, where right angles are a defining feature. In a rhombus, the opposite angles are equal, and the diagonals bisect each other at right angles, adding to its distinctive properties. Therefore, recognizing these features clearly categorizes it as a rhombus in geometric terminology.