Answer:
The solid are triangular prism, triangular pyramid and cone.
Step-by-step explanation: The solid are triangular prism, triangular pyramid and cone.
Triangle is a shape and not a solid
A triangular pyramid is a geometric solid with a base that is a triangle and all other faces are triangles with a common vertex. A triangular prism is a geometric solid with two bases that are congruent (identical), parallel triangles and all other faces are parallelograms