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 V V equals 5 in Roman numerals. |
variable A variable is an unknown or placeholder in an algebraic expression. For example, in 2x+y, x and y are variables. |
vector A vector is a number (a magnitude) together with a direction (compare with scalar). A vector can be represented by an arrow whose length represents the magnitude and the direction represents the direction. For example, velocity is a vector; velocity tells you how fast something is traveling, and its direction. |
 Venn diagram A Venn diagram is a diagram that uses overlapping circles to show relationships among sets of things. |
vertex A vertex of an angle is a point at which two sides of the angle meet. A vertex of a polygon is a point at which two of the sides meet. A vertex of a polyhedron is a point at which 3 or more faces meet. |
volume Volume is a measure of 3-dimensional space expressed in cubic units. |
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