60 terms

These are sixty math terms that you will likely see on the 6th Grade STAAR Math test.

An angle measuing more than 0 degrees and less than 90 degrees

acute angle

Having the same size and shape

congruent

Any number multiplied to form a product. A product can be divided by one factor to find the other factor.

factor

Having the same value

equivalent

Reversed position or direction

inverse

The point of intersection for two sides of a plane figure, three sides of a solid figure, or the endpoints of two rays that form an angle.

vertex (vertices - plural)

A number that is a multiple of all denominators in a problem.

common denominator

Three or more line segments in a plane that forms a closed figure. The line segments never cross but meet at their endpoints.

polygon

The result of multiplying two or more numbers.

product

A number with only two factors: the number itself and one.

prime number

The difference between the least and greatest values in a set of numbers.

range

A triangle with sides of different lengths and no two angles are the same.

scalene triangle

Surface space that is measured in square units.

area

The distance around a figure.

perimeter

The distance around a circle (the perimeter of a circle).

circumference

The figure formed when two rays meet at a common endpoint called a vertex.

angle

A number that is a factor of two or more numbers.

common factor

Two angles whose sum equals 90 degrees.

complementary angles

A line segment that passes through the center of a circle and has its endpoints on the circle. It describes how wide the circle is.

diameter

The largest single factor for two or more numbers.

greatest common factor (GCF)

A polygon with six sides.

hexagon

All whole numbers (both positive and negative) and zero.

integers

The sum of a group of numbers divided by the number of numbers. Also known as the average.

mean

A value found by ordering a group of data from least to greatest and choosing the middle value of the group.

median

In a group of values, the value that occurs most often.

mode

The part of a fraction that stands for how many parts of a whole or group are included in the fraction.

numerator

A polygon that has four sides.

quadrilateral

A quadrilateral with two pairs of congruent, parallel sides.

parallelogram

A parallelogram with four right angles

rectangle

Part of the population that is studied to find the characteristics of the whole population.

sample

A positive whole number with more than two factors. In other words, a number that is not prime. Zero and one are neither composite nor prime.

composite number

The part of a fraction that stands for the number of equal parts a whole or group is divided into.

denominator

In an equation made up of two fractions, the numerator of one fraction times the denominator of the other fraction.

cross product

A fraction with a numerator that is larger than or equal to its denominator.

improper fraction

Two or more fractions that have the same denominator

like fractions

The smallest multiple that two or more numbers have in common

least common multiple (LCM)

A value that combines a whole number and a fractional amount

mixed number

An eight-sided polygon

octagon

Lines in the same plane that do not intersect. The symbol //

parallel lines

The ratio of a number to 100 (per one hundred). The symbol %

percent

Breaking down a composite number until all of the factors are prime

prime factorization

The likelihood that an event will occur. The probability that an event will occur is 0, 1, or somewhere between 0 and 1.

probability

A length that is half the diameter of a circle; the distance from the center of the circle to the circle itself.

radius

An angle that measures 90 degrees

right angle

A triangle with one right angle

right triangle

Two angles whose sum is 180 degrees

supplementary angles

Rules that tell which steps to follow when solving an expression.

order of operations

Operations that do the exact opposite of each other; they undo each other (addition and subtraction, for example)

inverse operations

A fraction with all common factors (other than 1) factored out of the numerator and denominator

lowest terms

The value that shows the relationship of a circle's circumference to its diameter; it has an approximate value of 3.14

pi

A solid figure that has two congruent, parallel polygons as its bases. Its sides are parallelograms

prism

A comparison of the two values of two numbers

ratio

An equation stating that two ratios are equal

proportion

To make a fraction easier to work with by taking out common factors. In an expression, combining variables that have like unknowns.

simplify

A unit for measuring area

square unit

A ratio that shows the cost per unit of measure

unit ratio

The horizontal number line of a coordinate graph

x-axis

The vertical number line of a coordinate graph

y-axis

The value on the x-axis used to locate a point on the coordinate graph. It is the first value in an ordered pair.

x-coordinate

The value on the y-axis used to locate a point on the coordinate graph. It is the second value in an ordered pair.

y-coordinate