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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. Vertical Angles [10/27/1996] What are vertical angles? Visualizing Skew Lines [05/16/2002] What do you call lines that are not parallel but don't intersect? Volume vs. Capacity [05/01/2002] Can you explain the difference between the terms volume and capacity? Also mass and weight. Ways to Remember the Meaning of Circumference, Radius, Diameter, and Chord [03/18/2004] If the minute hand touched the edge of the clock, would it be most like a diameter, radius, circumference, or chord of a circle? I have a hard time remembering what each of those means. What Are Differential Equations? [12/17/2003] Can you please tell me what differential equations are? Why do they have two variables? Why are the solutions formulas and not numbers? What are Flops? [02/25/2001] What are flops, as relating to computers? What Are Proofs? [08/12/1997] I am homeschooling and do not understand proofs. Can you help me out? What Are Quadratic Functions? [02/27/2003] What is the difference between a quadratic function and a quadratic formula? What Are the Definitions of Zero and Root? [12/23/2003] What is a zero, and what is a root? How are they used with regard to equations? Different sources seem to be giving me different answers, some of which contradict each other. What actually IS a root or zero? What Constitutes a Prism? [06/10/1999] If I am looking at an object that's shaped like a triangle, how do I know if it's a prism? What Does a Twofold Increase Mean? [01/23/2004] Is a twofold increase simply twice the amount? What about a threefold increase? I'm not used to this terminology of using 'fold.' Does it refer to powers or multiples? What Does Average Mean? [12/05/2001] Can someone explain what average is? For example what is the average rainfall in New York? I understand the formula needed to find the average, but what is the meaning of average? What Does a Vertical Bar Mean? [01/29/2001] I want to know what the symbol | means, for example |2+3|. What Does EE Stand For? [01/14/2003] What does the EE stand for on a scientific calculator? What Does "Stellated" Mean? [03/31/1998] Stellating polyhedra, including solids that are already stellated. What is a continued fraction? [03/06/1998] What is a continued fraction and what makes it different from the types of fractions or ratios I'm used to? What is a Cuboctahedron? [01/02/2001] What is a cuboctahedron? What is a Functional Transformation? [08/11/2002] I would like a brief definition of a functional transformation and what an application is in early Calculus. What is a Median? [03/03/1998] A definition of median, and four examples of calculating medians. What is an N-gon? [06/01/1998] Can you explain the statement: "In an N-gon, n-3 diagonals can be drawn from one vertex"? What is a point? [8/26/1996] Define a point, please. What is a Property? [11/29/2001] I understand Undefined and Defined terms and Axioms and Theorems, but what exactly is a Property? Is it the same thing as a Theorem? Also what is a Law? What is a Set? [04/04/1997] What is the correct term to refer to groups of objects like 3 cars, 7 pencils, or 5 apples? What is a Sign? [04/21/2003] Can you do anything in math without signs? What is a slide rule? [07/27/1997] What does a slide rule do and how does it work? What Is a Theorem and Why Are They Important? [08/15/1997] I don't understand how theorems help us learn. What is Dimensional Analysis? [11/26/2001] What is dimensional analysis and how does it work? What is Length in a Rectangle? [05/31/1999] Is the length of a rectangle the longest side, whether vertical or horizontal? What is Math? [10/04/1997] Is math a science, an art, or some other anomaly? What is Meant by "the Sum of a Series"? [10/21/2003] A series is the sum of consecutive terms. So why do many authors speak about "the sum of a series" if the name "series" already means "sum of consecutive terms"? What is the Definition of 'Number'? [01/26/2006] I think of a number as a symbol for a measure of magnitude, like how many of something there are. You can't have 2 + i things, so how can that be a complex 'number'? How do you define what a number really is? What Motivates New Definitions? [02/06/2000] Why do so many mathematical objects -- groups, fields, rings, vector spaces -- have nearly identical definitions and properties? Does every new object have to undergo some rigorous proof of its existence? What Skew Lines Are and Aren't [01/14/2004] A description of skew lines including diagrams and definitions. When is the expression Q.E.D. used? [02/15/1999] More on Q.E.D. Why Cubed? [11/27/2001] Why do we use "cubed" for the volume of a figure? Why Does 0^0 = 1 and Not Undefined? [11/30/2007] Your proof for why x^0 = 1 uses a law which breaks down at x = 0. Then in your definition for 0^0 you side significantly in favor of 0^0 = 1 based on your rule for x^0 = 1 (which was based on a law that breaks down at 0). Based on what I've read I would side in favor of undefined. Are there any more conclusive reasons for siding with 0^0 = 1? Why Do We Have Leap Year ? [02/25/1998] Why do we need to have one extra day each 4 years? Why Is a Circle 360 Degrees? [07/01/1998] Why is a circle defined as 360 degrees? Why is a Telescoping Series Called Telescoping? [03/29/2008] I understand what a telescoping series is, but I'm curious why it is referred to as 'telescoping'. What's the reason for that name? Why is K Used as an Abbreviation for Area? [11/29/2004] Many textbooks use the letter K to represent area in formulas, instead of A. Do you know why that is? Page: []

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