math definition of face
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Face (geometry) In elementary geometry, a face is a two-dimensional polygon on the boundary of a polyhedron. Other names for a polygonal face include side of a polyhedron, and tile of a Euclidean plane tessellation. For example, any of the six squares that bound a cube is a face of the cube. Sometimes face is also used to refer to the 2-dimensional features of a 4-polytope.
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Algebra Algebra is a part of mathematics (often called math in the United States and maths in the United Kingdom ). It uses variables to represent a value that is not yet known. When an equals sign (=) is used, this is called an equation.
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Glossary - Mathematical words you need to know Algebra is the branch of mathematics where symbols or letters are used to represent numbers. Angle. An angle is formed when two straight lines cross or meet each other at a point. The size of an angle is measured by the amount one line has been turned in relation to the other. Approximate. An approximate value is a value that is close to the actual value of a number.
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face the front part of the head, from the forehead to the chin. 2. a look or expression on this part: a sad face. 3. an expression or look that indicates ridicule, disgust, etc.; grimace: The child put on a face when told to go to bed.
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Practice Visual Arts II An edge is a line segment. It connects vertices together. In a two-dimensional object like the hexagon above, we sometimes call it a side. A flat surface (like the hexagon itself, or any of the flat sides of the 3-D figure on the right) is usually called a face, but sometimes we call it a side too. That's why we usually try to avoid the word side when working with 3-D objects because it is less clear than using the terms edge and face instead.
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Cambridge Histories Online Â© Cambridge University Press, 2008 face meaning, definition, what is face: the front of the head, where the eyes, nose, and mouth are: . Learn more.
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reflection Mathematics. ( 1 in a plane) the replacement of each point on one side of a line by the point symmetrically placed on the other side of the line. ( 2 in space) the replacement of each point on one side of a plane by the symmetric point on the other side of the plane.
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- 1 Edge: the intersection of two faces on a solid object. 2  This is a line. 3  Prism: a solid object with two congruent and parallel faces. 4  Pyramid: a solid object with a polygon for a base and triangles for sides. Base: one of two parallel, congruent sides of an object. 2  Edge: the intersection of two faces on a solid object. 3  This is a line. 4  Prism: a solid object with two congruent and parallel faces.
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Counting Faces, Edges & Vertices of Polyhedrons Counting Faces. 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.
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Complete Graph: Definition & Example In mathematics, we call a visual representation of a network a graph. A graph is a collection of points, called vertices, and line segments connecting those points, called edges. The number of edges that belong to a vertex is called the degree of the vertex.
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How Many Faces Does a Cylinder Have? One of the solid figures is cylinder. Cylinder can be defined as a solid figure which is circular in nature. We will discuss how many faces a cylinder has. So we conclude that a cylinder has two faces, both bases of cylinder are faces of cylinder and these bases are circular in shape. Area and volume of a cylinder can be determined by following formulas: Surface Area of cylinder is equals to 2πr (r + h) which can also be written as 2πr2 + 2πrh. Where 'r' is the radius of base of Cylinder and 'h' is the height from top to bottom. Area of cylinder can be easily determined by using above formula.
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Three-Dimensional Figures I. Cuboid: A solid bounded by six rectangular plane faces is called a cuboid. A box, a matchbox, a book, a brick, a tile, etc., are all in the shape of a cuboid. In the adjoining figure, ABCDEFGH is a cuboid. (i) Faces of a Cuboid: A cuboid has 6 faces. In the given figure, the 6 faces of the cuboid are:
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Cube In geometry, a cube is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex. The cube is the only regular hexahedron and is one of the five Platonic solids. It has 12 edges, 6 faces and 8 vertices. The cube is also a square parallelepiped, an equilateral cuboid and a right rhombohedron. It is a regular square prism in three orientations, and a trigonal trapezohedron in four orientations. The cube is dual to the octahedron.
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face A lot of different faces. A lot of different faces. Face is defined as the front part of the head and the front surface of anything. 1  An example of face is the combination of eyes, ears, mouth and nose. 2  An example of face is the part of the clock that displays the time.
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face human) head. face is used when referring to physical features: a pretty face with high cheekbones. countenance, a more formal word, denotes the face as it is affected by or reveals a person's state of mind; hence, it often signifies the look or expression on the face: a thoughtful countenance.
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- In geometry, a vertex (plural: vertices or vertexes) 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.[1]
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Face (geometry) A face of dimension k is called a k-face. For example the polygonal faces of an ordinary polyhedron are 2-faces. In set theory, the set of faces of a polytope includes the polytope itself and the empty set where the empty set is for consistency given a dimension of −1.
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Face The face is the feature which best distinguishes a person. Specialized regions of the human brain, such as the fusiform face area (FFA), enable facial recognition; when these are damaged, it may be impossible to recognize faces even of intimate family members.
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Shape: Face A face is one of the polygonal surfaces of a polyhedron. This rectangular prism has six faces. We can see three of them (blue, purple, and green); the other three are hidden from view. This polyhedron has eight faces. We can see five of them -- four rectangles (of which the blue, purple, and red ones appear to be square), and a green L-shaped six-sided figure (hexagon).
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Face The face is a central body region of sense and is also very central in the expression of emotion among humans and among numerous other species. The face is normally found on the anterior (frontal, rostral) surface of the head of animals or humans, although not all animals have faces.
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put on a happy/brave face Define face: the front part of the head that in humans extends from the forehead to the chin and includes the mouth, nose,… — face in a sentence the front part of the head that in humans extends from the forehead to the chin and includes the mouth, nose, cheeks, and eyes…
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My Math Homework An n-gon is called a polygon with n faces. The internal part of the polygon is known as polygon body. There are number of types of polygon and different names of polygon available for kids. In this article we are going to discuss about the different polygon and its definition which is very much helpful for kids.
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save face Word Origin & History. face late 13c., from O.Fr. face, from V.L. *facia, from L. facies appearance, form, figure, and secondarily visage, countenance; probably related to facere to make (see factitious). Replaced O.E. andwlita.
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face 1. the front part of the head, from the forehead to the chin. 2. a look or expression on this part: a sad face. 3. an expression or look that indicates ridicule, disgust, etc.; grimace: to make a face. 4. cosmetics; makeup: to put on one's face.
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- face noun (FRONT). › [C] the ​front or ​surface of an ​object: the ​north face of a ​mountain the ​west face of the ​building › [C] the ​front of a ​clock or ​watch that has the ​numbers or ​marks that show what ​time it is: a ​watch face with ​Roman ​numerals. More examples. 1  The ​ north face of the Eiger is a very ​ difficult ​ climb.
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Expression (mathematics) Expression (mathematics) In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.