It is tessellating where there are no gaps or overlaps.
The general name for a plane shape with four sides is a quadrilateral.
A regular 5-sided shape is called a pentagon.
A five sided shape is called a pentagon.
The total distance around a plane geometric shape, i.e. one drawn on a piece of paper, is called the shape's perimeter.
Six sided shapes are called hexagons. If all 6 sides are the same size, then the shape is called a regular hexagon.
It is a plane area in the shape of a nonagon!
Regular 20 sided solid is an icosahedron, so a plane equivalent is presumably an icosagon?
A plane shape is regular if each of its sides is of the same length AND each of its angles is of the same measure. An octagon can be regular or irregular.
An eight-sided plane figure is an octagon. If the sides are all the same length, and the angles are all equal, it is a regular octagon.
pentagon
A twelve-sided plane figure is called a dodecagon.
A plane figure with a googol sides is called a googolgon.
plane shape
hexagon
A square.
it is a plane shape because you said its a square
The function of an aircraft maintenance engineer is to keep the plane in top shape. He performs regular checks and other tests. In general words he helps maintain the plane in flying shape.