The Math Dictionary - Didax Educational Resources

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Math Dictionary

Found 22 Terms

sample space
The set of all possible outcomes for an experiment. Example: In tossing a number cube, the sample space, S, is S= {1,2,3,4,5,6}.

scalene triangle
A triangle with sides of different length and three different interior angles.

sector
The part of a circle bounded by two radii and the included arc.

segment
The part of a circle bounded by a chord and an arc.

semi-circle
Half of a circle (the area bounded by a diameter and an arc).

sequence
A pattern that follows a rule or order.

seriate
To put in order

simple fraction
A fraction with the numerator less than the denominator

simplify
To change to simpler terms (e.g., 45/60 to 3/4).

sine
In a right triangle, the length of a side opposite an angle divided by the length of the hypotenuse of the triangle.
more info

solid shape
A three-dimensional shape (with length, width, height).

sphere
A three-dimensional shape comprising a set of points, each point being equidistant from its center (e.g., a ball).

square number
A number whose units can be arranged into a square (e.g., 4::).

square pyramid
A three-dimensional shape with a square base and four sloping triangular sides meeting at a common vertex.

squared
A number squared is multiplied by itself.

standard form
A polynomial written with the exponent of the variable decreasing from left to right
more info

subset
A set within a set.

subtrahend
A number to be subtracted from another number.

sum
The result when two or more numbers are added.

supplementary angles
Two angles which, when added, total 180�.

surface area
The total area of all faces of a three-dimensional shape (measured in square units).

symmetrical
A shape is symmetrical if it is identical on either side of a line dividing it into two parts.


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