A five sided pyramid.
Triangular. the base is square, with four other triangular faces.
One side in its base. !!!! However, a regular pentgon has five(5) equal length sides. One of those sides is the base line.
pyramid
pyramid
This sounds like you are talking about a pyramid. Pyramids in Geometry are not restricted to the square pyramids you may be used to seeing in pictures of from Egypt. Pyramids are named after the type of polygon that make up their base. In Egypt, since the bases of those pyramids are squares, they are known as square pyramids. If you had a pyramid with a pentagon for a base, then it would be a pentagonal pyramid. Pyramids always have triangles for sides that meet at a common point at the top which is known as the apex.
A regular pentagon-based pyramid.
a pentagonal pyramid it has five triangular sides that all meet at a point at the top. the base is a pentagon
pyramid
The base is a pentagon. It has five isosceles triangles rising from the sides to a point above it.
A pentagon with five triangles as a net is commonly referred to as a "triangular prism" net. In this configuration, the pentagon serves as the base, while the five triangles represent the lateral faces that connect to the base. When folded, these triangles form the sides of the prism, enclosing a three-dimensional space.
Pyramid
The figure is a pyramid and the base is a square.
There is a contradiction in your question. If the base has four equal sides then is it a square so not all the faces are Triangles. However if the base is a square and the rest of the faces are triangles then your object is a "Square-based Pyramid"
A triangular pyramid. It has triangles on its 3 sides and a triangle on the bottom for a base.
Pyramid. Work: 4 sides (that you usually see) are triangles, the base (bottom) is a square
The answer is a pyramid.
it's a pyramid with 5 sides.