Question

what is the best name for the shape? trapezoid rhombus rectangle square

Explanation:

A trapezoid has only one pair of parallel sides. A rectangle has four right angles. A square has four right angles and all sides equal. A rhombus has all sides equal. The given shape has all sides equal (marked with tick marks) and no right - angle indication. So, it fits the definition of a rhombus.

Answer:

rhombus