The noun 'pyramid' is a singular, common, concrete noun; a word for a shape or structure with a polygon for its base and three or more triangles for its sides which meet to form the top; a word for a thing.
The word 'pyramid' is also a verb: pyramid, pyramids, pyramiding, pyramided.
The adjective of 'pyramid' is pyramidal.
ancient and gigantic
You got it right, "pyramid!"
a story that had a arrangement like a pyramid
No, it is a verb or a noun (to go around, to surround; a round shape). The adjective form is circular.
No, it is not an adjective. Differently is an adverb.The adjective would be different.
It is an adjective.It is a an adjective.
No, a pentagonal is an adjective, not a noun. So it is not any thing - just a description of some thing. The question is like asking if "smooth" is a pyramid.
No. Pyramids is a plural noun. The adjective form would be pyramidal.
A Tetrahedral * * * * * It is a tetrahedron (tetrahedral is its adjective). And, in any case it IS a pyramid - with a triangular base.
A quadrangular is an adjective, not a noun. A quadrangular pyramid will have a different number of faces from a quadrangular prism, for example.
"triangular" is an adjective - it is not enough to define a shape. You can have a triangular pyramid or a triangular prism and there will be different methods to calculate their volumes.
There can be a quadrangular pyramid or a quadrangular prism or other quadrangular shapes. "Quadrangular" is an adjective, not a noun. You need to be more specific.
A rectanglar or even rectangular, is an adjective and there is no such thing. You can have a rectangular pyramid or a rectangular prism. The formula will depend on which of these it is and on what information is available to you.
Heptagonal is an adjective: the answer depends on the noun that it refers to. A heptagonal pyramid, a heptagonal dipyramid or a heptagonal prism or some other heptagonal shape?
"Triangular" is an adjective and so cannot have any of anything. You need a noun to go with the adjective to make it a subject of the question: such as triangular lamina, or triangular pyramid or triangular prism, or triangular dipyramid or whatever. And in each case, the answer will be different!
The Pyramid of Khafre The Pyramid of Khafre
A pyramid....
That is how a pyramid is defined!That is how a pyramid is defined!That is how a pyramid is defined!That is how a pyramid is defined!