A polyhedron is formed by four or more polygons that intersect only at their edges. The faces of a regular polyhedron are all congruent regular polygons and the same number of faces intersect at each vertex, Regular polyhedrons are also called Platonic solid.
What is a closed figure formed by 3 or more straight lines?
Polygon – a closed plane figure formed by three or more line segments.
What is the term for the intersection of a three-dimensional figure and a plane?
A cross section is the intersection of a three-dimensional figure and a plane. Different cross sections can be taken of the same solid. A plane can slice through a solid in any direction.
What is a 3d polygon called?
In geometry, a polyhedron (plural polyhedra or polyhedrons) is a three-dimensional shape with flat polygonal faces, straight edges and sharp corners or vertices. The word polyhedron comes from the Classical Greek πολύεδρον, as poly- (stem of πολύς, “many”) + -hedron (form of ἕδρα, “base” or “seat”).
What 3d shape has 5 sides?
Pentahedron
| Name | Vertices | Faces |
|---|---|---|
| Square pyramid (Pyramid family) | 5 | 5 |
| Triangular prism (Prism family) | 6 | 5 |
Is a point where two or more edges meet?
, is a point where two or more curves, lines, or edges meet. As a consequence of this definition, the point where two lines meet to form an angle and the corners of polygons and polyhedra are vertices.
What three-dimensional solid has 6 rectangular faces 2 equal bases that are not rectangles and 18 edges?
Hexagonal prism because it has six rectangular faces (one that connects each edge of the two hexagon faces) and 18 edges.
What best describes the resulting three-dimensional figure?
Calculate the Price
| Which shape has a vertex that is also an apex? | pyramid |
|---|---|
| Which could be the base shape of the cylinder? | circle |
| Which best describes the resulting three-dimensional shape? | a cylinder with a base radius of 9 inches |
