It's a sphere.
the world
No. It is round.
Some of the pyramids in Antarctica resemble a triangular pyramid.
roof
shop around!
Roof of a house
Pyramids
tent
A triangular dipyramid.A triangular dipyramid.A triangular dipyramid.A triangular dipyramid.
"triangular" is an adjective, not a noun. So there is no object such as "the triangular". The triangular WHAT?
The Triangular Trade was a route to receive slaves. It got its name from the three routes that formed a triangle on the world map.
The most inhuman part of the triangular trade was the middle passage, in which slaves were carried from Africa to the New World.