# How many faces are on a sphere?

All of these figures are curved in some way, so they have no edges or vertices. What about their faces? A sphere has no faces, a cone has one circular face, and a cylinder has two circular faces. Therefore, the number of faces increases by one from one figure to the next.
A.

### How many curved edges does a sphere have?

An edge is where 2 faces meet, again some can be straight, some can be curved e.g. a cube has 12 straight edges whereas a cylinder has 2 curved edges. A corner is where 3 edges meet. A cube has 8 corners, as does a cuboid. A sphere has no edges and therefore no corners.
• #### What is a shape that has 5 sides?

Definition of a Polygon
Shape# of Sides
Pentagon5
Hexagon6
Heptagon7
• #### What shape has a curved surface?

These figures have curved surfaces, not flat faces. A cylinder is similar to a prism, but its two bases are circles, not polygons. Also, the sides of a cylinder are curved, not flat. A cone has one circular base and a vertex that is not on the base.
• #### How many sides are there in a pyramid shape?

The simplest regular pyramid then is a 4-sided pyramid (base + 3 sides). Its proper name is a "tetrahedron". The tetrahedron has the extra interesting property of having all four triangular sides congruent. An Egyptian pyramid has a square base and four triangular sides.
B.

### How many faces are in a cone?

A cone has one face. It is a three-dimensional shape with a circular base, one side and one vertex. Faces can be identified as the flat surfaces on a three-dimensional figure.
• #### How many faces are on a hexagon?

In geometry, the hexagonal prism is a prism with hexagonal base. This polyhedron has 8 faces, 18 edges, and 12 vertices. Since it has eight faces, it is an octahedron. However, the term octahedron is primarily used to refer to the regular octahedron, which has eight triangular faces.
• #### What is a rectangular box called?

A rectangular is a three dimensional shape with six rectangular shaped sides. All of its angles are right angles. It can also be called a cuboid. A cube and a square prism are both special types of a rectangular prism. Keep in mind, a square is just a special type of rectangle!
• #### How many flat and curved surfaces does a cylinder have?

These edges are curved edges. In a cylinder there are 2 plane surfaces and 1 curved surface. There are 2 edges and no vertices. The base and top of a cylinder are of the same shape (circular) and size.
C.

### How many faces has a cylinder?

2
• #### How many faces has a sphere?

All of these figures are curved in some way, so they have no edges or vertices. What about their faces? A sphere has no faces, a cone has one circular face, and a cylinder has two circular faces. Therefore, the number of faces increases by one from one figure to the next.
• #### How many curved edges are there in a cylinder?

An edge is where 2 faces meet, again some can be straight, some can be curved e.g. a cube has 12 straight edges whereas a cylinder has 2 curved edges. A corner is where 3 edges meet. A cube has 8 corners, as does a cuboid. A sphere has no edges and therefore no corners.
• #### How many faces are on a triangular pyramid?

It has 4 Faces. The 3 Side Faces are Triangles. The Base is also a Triangle. It has 4 Vertices (corner points)

Updated: 12th November 2019