Specifically, forms A and D are nets of a pentagonal pyramid.
A 2-dimensional pattern called a net of a pentagonal-based pyramid may be folded into a 3-dimensional pyramid. The following characteristics of a pentagonal pyramid's net are present:
The pyramid is made up of five triangles that make up its sides and a normal pentagon that serves as its base.
Congruent isosceles triangles make up the five triangles.
The regular pentagon's centre is where the pyramid's peak is situated.
Every triangle has two vertices on the regular pentagon's edges and one vertex at the pyramid's apex.
Each triangle's angles add up to 180 degrees, while the normal pentagon's angles add up to 540 degrees.
Five times the length of one side of a normal pentagon makes up the perimeter of the pyramid's base.
The Pythagorean theorem may be used to determine the height of the pyramid, which is the perpendicular distance between the peak and the base.