MATH GLOSSARY
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| Title | Description | |
|---|---|---|
| Lambda | Lambda is the eleventh letter of the Greek alphabet and is used for wavelength in physics. |  |
| Lateral | The flat sides of a geometric solid are generally termed the Lateral sides or Lateral surface area. | |
| Lateral Surface Area | The Lateral Surface Area of a geometric solid is the expanse of the flat sides (or smooth sides). Be careful, some solids have faces that are termed bases and not lateral surfaces. | |
| Law of Cosines | The familiar Pythagorean Theorem is a special case of the Law of Cosines. | |
| Law of Sines | The ratio of the sine of any angle within any specific triangle and the length of the opposite side is a constant. | |
| Leading Coefficient | Most typically we write polynomials with the first term having the highest order, or power. The coefficient of this leading term is literally the Leading Coefficient. | |
| Leading Term | The first term in a polynomial, most typically the highest-order term, is the Leading Term of the polynomial. | |
| Least Common Denominator | When two or more fractions are being summed we want the LCD to facilitate the operation of addition. | |
| Least Common Multiple | The LCM is most typically applied to integers. It is the smallest value evenly divisible by each number for which we seek the LCM. | |
| Least Upper Bound | As the name implies, a function often has a highest value or a limit beyond which it may not realize. | |
| Leg, Trapezoid | The Leg of a Trapezoid is one of the non-parallel sides. | |
| Leg, Triangle | Most generally the legs of a triangle refer to the perpendicular sides of a right triangle only. | |
| Lemma | A little, inconsequential theorem is sometimes called a Lemma. | |
| Like Terms | Like Terms have the same variables raised to identical powers. | |
| Limit | Some functions have a Limit, a bound beyond which they may not realize. | |
| Line | A collection of points that comprise the shortest path between two points in Euclidean geometry is a Line; all points in a Line are collinear and, of course, coplanar. | |
| Line Segment | A section of a line, with endpoints on both ends, is a Line Segment. | |
| Linear | As the first four letters imply, Linear means "of a line" or "lined up" in a collinear fashion. | |
| Linear Pair | Two adjacent supplementary angles form a Linear Pair. | |
| Local Maximum | A Local Maximum is a high spot on the graph of a function. Also termed a relative maximum, it is the greatest value within a defined neighborhood. | |
| Local Minimum | A Local Minimum is a low spot on the graph of a function. Also termed a relative minimum, it is the least value within a defined neighborhood. | |
| Loci | The points that comprise a function (or graph thereof) are its Loci. | |
| Locus | A single point on a function or on its graph is a Locus. | |
| Logarithm | A Logarithm is a number associated with a power and a base; the function is the inverse of an exponential function. | |
| Logic | Logic takes many forms and is instrumental in understanding the language of mathematics. | |
| Long Division | Adolph Hitler actually had two middle names: Long Division. Just kidding. And we should not kid about an evil, pestiferous maniac like Hitler. | |
| Lower Bound | As the name suggests, some functions are limited on the low side. | |
| Lower Quartile | Also first quartile, it is the 25th percentile, where 75 percent of the data is greater than this value. | |
| Lower Quintile | The 20th percentile; also first quintile. | |
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Math Glossary
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