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.
You got it right, "pyramid!"
No, it is a verb or a noun (to go around, to surround; a round shape). The adjective form is circular.
It is an adjective.It is a an adjective.
a story that had a arrangement like a pyramid
No, it is an adverb. The adjective is clumsy.
No. Pyramids is a plural noun. The adjective form would be pyramidal.
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.
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.
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.
"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.
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!
Rectangular is an adjective, not a noun so there is no such thing as a rectangular. You an have a rectangular lamina, a rectangular pyramid, a rectangular prism, a rectangular antiprism and they all have different solid shapes.
The Pyramid of Khafre The Pyramid of Khafre
A pyramid....