Square
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.
A scalene triangle
A four-sided figure with no equal sides is an irregular quadrilateral.
One is a three-sided figure with two sides of equal length; the other is a four-sided figure with one pair of parallel sides.
1
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.
It is an equilateral triangle that has 3 equal sides.
It is a regular 5 sided pentagon
An isosceles triangle
an obtuse triangle
Square
Isosceles Triangle.
Scalene Triangle
A square
Trapezoid
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.