8 Answers

pyramid because a pyramid is 3dimensional form of a triangle

Pyramid darling
a square looks like a cube and a triangle looks like a pyramid.

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RE:
square is to triangle as cube is to:sphere, rectangle, ice, pyramid ?
Source(s): square triangle cube sphere rectangle ice pyramid: https://biturl.im/yKzSw 
Pyramid.
The first part is in two demensions, and the second is in three.
A cube is a 3D equivalent of a square, so you find the 3D equivalent of a triangle, which is pyramid.

pyramid

pyramid
Source(s): me 
pyramid

pyramid