A shape with four unequal sides is called an irregular quadrilateral.
They are perpendicular lines that meet at right angles which is 90 degrees.
This is a parallelogram called a rectangle. A square has four right angles and four sides that are equal in length.
It is a heptagon that is a polygon having 7 sides with 7 interior angles.
The simplest shape that can have 2 right angles is a rectangle or a square. You can make an unlimited number of more complex shapes, though. A house shape is a pentagon with 2 right angles--you could even make it with 3 right angles.
A seven sided shape (with seven angles) is called a heptagon.
A seven sided shape is a heptagon.
A shape with parallel sides but no right angles is called a parallelogram
An irregular heptagon.
An irregular heptagon.
Because of its right angles.
a Pentagon is five sided and CAN have 3 right angles.
Such a shape is called a rhombus.
a decagon
Rhombus
A shape with no right angles but is still a quadrilateral is called a rhombus. A rhombus has four sides of equal length and opposite sides that are parallel to each other. Although its angles are not right angles, they are all congruent.
A shape with no right angles and one pair of parallel lines would be called a trapezoid in the USA, and a trapezium in Britain.