if the angles of a figure are the same but the sides aren't, it is similiar. Congruent is angles and sides exactly the same
A regular polygon
A figure with four equal sides and no right angles is a rhombus. A rhombus is comprised of two acute angles and two obtuse angles.
an equilateral triangle has all its angle and sides equal
A general quadrilateral.
A four sided figure with four equal sides and no right angles is a diamond, or a rhombus. If it had four right angles, it would be a square.
square
polygon
a square
The figure is a Regular polygon.
equilateral parallelogram
Not sure exactly what the question is? But this type of figure would be known as a parallelogram