No, triangular is an adjective, since it describes (modifies) nouns.
"triangular" is an adjective, not a noun. So there is no object such as "the triangular". The triangular WHAT?
Triangular.
You cannot because there is no object. Both "rectangular" and "triangular" are adjectives, there is no noun! Rectangular, triangular what?The question is like asking how tall is the broad green? Broad green what?You cannot because there is no object. Both "rectangular" and "triangular" are adjectives, there is no noun! Rectangular, triangular what?The question is like asking how tall is the broad green? Broad green what?You cannot because there is no object. Both "rectangular" and "triangular" are adjectives, there is no noun! Rectangular, triangular what?The question is like asking how tall is the broad green? Broad green what?You cannot because there is no object. Both "rectangular" and "triangular" are adjectives, there is no noun! Rectangular, triangular what?The question is like asking how tall is the broad green? Broad green what?
"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!
No, it is not. Triangle is a noun, a shape or anything with three sides. The adjective form is triangular.* In the popular historical term, triangle trade, it is acting as a noun adjunct in place of the adjective triangular.
The adjective form of triangle is triangular.
The nearest word to "tringular" is triangular which is an adjective (like tall, for example): it is not a noun. So something - a table, for example - can be triangular but a triangular as such cannot exist in the same way that a tall cannot exist. So a triangular cannot be a line of symmetry.
A triangular dipyramid.A triangular dipyramid.A triangular dipyramid.A triangular dipyramid.
It is a triangular pyramid.It is a triangular pyramid.It is a triangular pyramid.It is a triangular pyramid.
A triangular pyramid or tetrahedron.A triangular pyramid or tetrahedron.A triangular pyramid or tetrahedron.A triangular pyramid or tetrahedron.
A triangular prism is a pentahedron, a triangular pyramid is a tetrahedron.
The plural noun is spelled pyramids (triangular solids). The capitalized form Pyramids would typically mean the pyramid tombs of ancient Egypt.