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 TOPICS This page:   definitions    Search   Dr. Math See also the Internet Library:   dictionaries HIGH SCHOOL About Math Analysis Algebra    basic algebra    equations/graphs/      translations    linear algebra    linear equations    polynomials Calculus Complex Numbers Calculators/    Computers Definitions Discrete Math    permutations/    combinations Exponents    Logarithms Fibonacci Sequence/   Golden Ratio Fractals Functions Geometry    Euclidean/plane      conic sections/        circles      constructions      coordinate plane      triangles/polygons    higher-dimensional      polyhedra    non-Euclidean    practical geometry    symmetry/tessellations History/Biography Interest Logic Negative Numbers Number Theory Physics/Chemistry Probability Projects Puzzles Sequences/Series Sets Square/Cube Roots Statistics Transcendental   Numbers Trigonometry Browse High School Definitions Stars indicate particularly interesting answers or good places to begin browsing. Mathematical Meaning of Undefined [12/19/2002] What is the meaning of the word 'undefined' in mathematical terms? Mathematical Models [07/17/2002] What is a mathematical model, and how would it be used? Mathematics, Logic, and Intuition [05/27/2003] How is math related to logic and intuition? Math Symbol for C [12/15/1997] I am puzzled by one symbol of typing math. What does the upper case letter C mean? As in (2C1) (3C1) / (47C2) = 6/1081. Math Symbols [04/07/1997] What do the common math symbols (backward E, upside-down A, etc.) mean? Matrix Multiplication [09/04/1997] I am doing a project in Algebra 2 and must research matrix multiplication. The Meaning of Locus [03/04/2003] What is the locus of points equidistant from two parallel lines 8 meters apart? Meaning of '-ominoe' [11/07/2001] We are drawing pictures of dominoes, triominoes, tetrominoes, and pentominoes. What is the meaning of the root "ominoe"? The Meaning of 'Or' in Logic Statements [12/19/2003] If a logic statement says, 'James is taking fencing or algebra,' does that mean he is taking one class or the other, or could he be taking both of them? Meaning of R++ [9/12/1996] What do the symbols R_{+} and R_{++} mean? The Meaning of Space [07/23/1997] Is the term 'Space' a mathematical object? I have seen it in "Vector Space," "Banach Space," and "Hilbert Space," but are they the same thing? Meanings of Math Symbols [06/19/1997] In math notation, what do the vertical bar, the colon, and the solid black square (at the end of a proof) mean? Mean, Median, and Mode [07/15/1998] Can you explain the three ways to represent a group - mean, median, and mode? I am having trouble understanding the mode. Metric System Prefixes [09/17/1997] My algebra teacher wrote the word teraflops on the board and told us to find the meaning. Moebius Strips: How Many Sides and Surfaces? [10/18/2001] What is the difference between a side and a surface? Name of Bar That Denotes a Repeating Decimal [08/30/2004] What is the name of the bar that goes over a digit or group of digits that signifies that the digit or group repeats? Names of Parts of a Cone [8/2/1996] Are the components of a net of a cone called faces in all cases, or only for polyhedra? Names of Polynomials [11/25/1997] Are polynomials with higher degree than 5 named? What are they called? Names of Polynomials with More Than Three Terms [03/25/2004] What are the official, mathematical names for polynomials with more than three terms? For example, a polynomial with one term is a monomial, with two terms is a binomial, and with three terms is a trinomial. What is a polynomial with more than three terms called? Naming Geometric and Arithmetic Progressions [04/04/2003] Why is an exponential progression called 'geometric'? Why is a linear progression called 'arithmetic'? Napoleon's Triangle [08/10/1999] What is Napoleon's triangle? Negating Statements [10/27/1998] What is negation? What is a statement? How do you negate a statement? Nets in a Geometrical Sense [03/07/1999] What is the "net" of a shape? Nonagon or Enneagon? [02/06/2003] Is 'enneagon' really the correct name for a 9-sided polygon? Non-Euclidean Geometry [10/22/2001] What is non-Euclidean geometry? What two concepts are different from Euclidean geometry? Non-Euclidean Geometry for 9th Graders [12/23/1994] I would to know if there is non-euclidean geometry that would be appropriate in difficulty for ninth graders to study. Normal Distribution Curve [11/13/2000] What is the normal distribution curve? No Slope: An Ambiguous Term [05/08/2003] What is the distinction between a line with a slope of zero and a line with no slope? Noting Nothing: Braces around Zero vs. Empty Braces [08/02/2010] A student struggles to distinguish among the meanings of {0}, {}, and the symbol phi. Doctor Ian clears up the set theory notation, then emphasizes that the empty set can, itself, be an element. Number of Cylinder Edges [04/01/2002] My son was asked "how many edges are there on a solid cylinder?" on a recent math examination. His answer was "2" and it was marked incorrect. Number Word Etymologies [05/03/2001] Who made up the names for numbers? Obtuse and Oblique [7/29/1996] Are the terms "obtuse" and "oblique" interchangeable? Obtuse Angles Function [08/04/2014] A student wonders why the relationship between trigonometric functions and triangle side ratios holds not just for right triangles, but for all triangles. Doctor Peterson models the trigonometry of a non-acute vertex by re-drawing it on the Cartesian coordinate system. Odds Slang for Probability? [02/06/1997] Is "odds" slang for probability? One- and Two-sided Polygons [12/07/1999] Can you explain what a monogon and a digon are? One-to-One Correspondence and Transfinite Numbers [12/10/1999] Can you explain what Cantor meant by one-to-one correspondence, and transfinite numbers? Opposite of Percentage [07/31/2001] I am trying to write a document explaining a common procedure: calculating a discounted price. What is the name given to the term (1- discount_rate)? Ordered Pairs vs. Coordinates [9/9/1996] What is the difference between an ordered pair and coordinates? Order of Quadrant Numbers [10/21/2002] Why are quadrants numbered that way? Origin of the Null Symbol [03/05/2003] Where did the null symbol come from? Page: []

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