What is the meaning of face in mathematics?

What is the meaning of face in mathematics?

In solid geometry, a face is a flat surface (a planar region) that forms part of the boundary of a solid object; a three-dimensional solid bounded exclusively by faces is a polyhedron.

What does vertex mean in math?

Definition of vertex 1 : the top of the head. 2a : the point opposite to and farthest from the base in a figure. b : a point (as of an angle, polygon, polyhedron, graph, or network) that terminates a line or curve or comprises the intersection of two or more lines or curves.

What does edges mean in math?

In geometry, an edge is a particular type of line segment joining two vertices in a polygon, polyhedron, or higher-dimensional polytope. In a polygon, an edge is a line segment on the boundary, and is often called a polygon side.

What is a vertex in geometry example?

A vertex is a point where two straight lines or rays meet. Vertices are found in angles, which are measured in degrees. They’re also found in two-dimensional and three-dimensional objects where the sides or edges of these objects meet. For example, a rectangle has four vertices because it has four sides.

What are edges vertices and faces?

Vertices, edges and faces A face is a flat surface. An edge is where two faces meet. A vertex is a corner where edges meet. The plural is vertices.

What is an example of an edge in math?

For a polygon: A line segment on the boundary joining one vertex (corner point) to another. Example: This pentagon has 5 edges. For a polyhedron: A line segment where two faces meet.

How do you count faces of a shape?

So to count the number of faces, you look for how many flat sides the polyhedron has. Looking at the shape, you see that it has a face on top, on the bottom, to the left and to the right, on the front and at the back. Counting each of these, you end up with 6 faces.

What does it mean to high-fived someone?

/ ˌhaɪ ˈfaɪv / to give someone a high five (= a greeting or celebration in which two people each raise a hand and bring the fronts of their hands together with force): As the show ended, Chris high-fived his friends. Friends hugged and high-fived.

What does high five mean in soccer?

: a slapping of an upraised hand by two people (as in celebration) gave each other a high five after the winning goal.

Where did the term high five come from?

Smith is sometimes credited with popularizing the term high five during the 197980 basketball season. This example is from Wikipedia and may be reused under a CC BY-SA license. Blue’s tricks include pouting, giving a high five, playing dead, rolling over, speaking, and skateboarding.

How do you use high-fiving in a sentence?

Improve your vocabulary with English Vocabulary in Use from Cambridge. Learn the words you need to communicate with confidence. As the show ended, Chris high-fived his friends. Friends hugged and high-fived. Boston fans started high-fiving and cheering right after the game. My wife and I high-fived each other. We’ve been high-fiving people all day.