A square.
Well for a four sided figure the sum of the angles must equal 360 degrees
A rectangle.
Any plane figure with seven sides is a heptagon.If all the sides are equal, and all the angles are equal, it is a regular heptagon.
Four sided figure. All sides are the same length. All angles are equal. Four right angles. Both diagonals are equal.
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.
A Regula Convex decagon has 10 equal sides and 10 angles with each angle being 144 degrees. There are also convex decagons that have ten angles but some of them may be inscribed in the figure. All 10 sided figures though are known as a decagon.
A seven sided figure with equal angles and equal sides is known as a heptagon. It looks similar to a pentagon but has more sides and therefore larger angles.
A six-sided figure with all angles equal.
Trapezoid
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.
quadrilateral
A four-sided polygon with all sides equal and no right angles would be a rhombus. A rhombus consists of two acute angles and to obtuse angles.
Rhombus(diamond)
A Rhombus
A square.
A square is 4 sided with sides of equal length and angles of equal measure A triangle is a three sided CLOSED figure