To determine the base of a 3D figure, first identify the shape that the figure rests upon or the face that is considered the bottom in its natural position. For common shapes like prisms or cylinders, the base is typically a flat polygon or circle. In more complex figures, analyze the orientation and context to decide which face serves as the base for stability or support. Visualizing the figure or using physical models can help clarify which side should be considered the base.
It means the base in a 3D figure. For example, if it was a pyramid. the bottom part would be the base and you get the area of that base
A triangular base pyramid would fit the description.
Sometimes. Any face can be defined as a base of a prism; but pyramids may have one face that is a base and not a triangle.
Sometimes because a sphere which is a 3d figure has a diameter
It isn't clear how you would define the "perimeter" for a 3D figure. The base is the product of length x width.
A pyramid.
It means the base in a 3D figure. For example, if it was a pyramid. the bottom part would be the base and you get the area of that base
polyhedron
A triangular base pyramid would fit the description.
Sometimes. Any face can be defined as a base of a prism; but pyramids may have one face that is a base and not a triangle.
To find the base of a figure, you first need to identify the shape of the figure. The base of a figure is typically the bottom or lower side that forms the foundation or support for the rest of the shape. For example, in a triangle, the base is usually the side on which the triangle stands. In a rectangular prism, the base is one of the two parallel and congruent rectangular faces.
A triangular pyramid. It has triangles on its 3 sides and a triangle on the bottom for a base.
A 3D shape with one base and three faces can only have triangular faces.
Sometimes because a sphere which is a 3d figure has a diameter
The cone IS a 3d figure.
It isn't clear how you would define the "perimeter" for a 3D figure. The base is the product of length x width.
It depends on the type of figure. If it is a 2D figure, then it is called area. If it is a 3D figure, then it is called volume.