a lumber yard
A pentagon and a quadrilateral, respectively.
Parallelogram
1200 sided figure is chiliadihectagon
a 24 sided polygon is a icosikaitera.
A four-sided solid is called a tetrahedron.
A four sided shape
quadrilateral
quadrilateral
34-gon
It can be a quadrilateral, though quadrilaterals are 4-sided shapes in general.
Since I don't have the vaguest idea what it is, I would not call it anything!
a lumber yard
A mansard - it is explained in Wikipedia Regards Eskimo Rabbit
A four sided polygon is a quadrilateral.
Rhombus , Square , Kite , Quadrangle As you can see quad means four, so that's why they call it quadrangle.
what do we call in the two sided fastener