It is a three dimensional figure of some sort.
There are infinitely many different plane figures that can be made up of 2-dimensional shapes - provided that they are all in the same plane. There cannot be any 3-dimensional shapes involved.
A figure made up of two or more three-dimensional figures is called a composite solid. These composite solids can include combinations of shapes like cubes, spheres, cylinders, and cones. The properties of the composite figure can be determined by analyzing the individual shapes and how they interact with one another. Common examples include a cylinder topped with a hemisphere or a cube attached to a rectangular prism.
A regular tetrahedron
It can be any 2-dimensional figure.
It is a three dimensional figure of some sort.
There are infinitely many different plane figures that can be made up of 2-dimensional shapes - provided that they are all in the same plane. There cannot be any 3-dimensional shapes involved.
A regular tetrahedron
A triangulare prism
It can be any 2-dimensional figure.
Polyhedrons are three-dimensional shapes with flat faces, straight edges, and sharp corners, known as vertices. Examples of polyhedrons include cubes, pyramids, prisms, and dodecahedrons. These shapes have a closed surface and are made up of polygons, which are two-dimensional shapes with straight sides.
Spatial figure is a three dimensional figure. It is made up of plane figure whose all sides are joined together to form a close figure
polyhedron is often defined as a geometric object with flat faces and straight edges polygon is traditionally a plane figure that is bounded by a closed path or circuit, composed of a finite sequence of straight line segments (i.e., by a closed polygonal chain). .
3-dimensional shapes made by extruding a polygon are called prisms.In this instance it would be a triangular prism.
A polyhedron is a three dimensional figure made up of sides called faces, where each face is a polygon.
Find the areas of the rectangles and triangles. Add them together.
A triangular pyramid is a tetrahedron, or a solid three-dimensional figure made up of four triangular faces.