An angle measuing more than 0 degrees and less than 90 degrees
Having the same size and shape
Any number multiplied to form a product. A product can be divided by one factor to find the other factor.
Having the same value
Reversed position or direction
vertex (vertices - plural)
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.
A number that is a multiple of all denominators in a problem.
Three or more line segments in a plane that forms a closed figure. The line segments never cross but meet at their endpoints.
The result of multiplying two or more numbers.
A number with only two factors: the number itself and one.
The difference between the least and greatest values in a set of numbers.
A triangle with sides of different lengths and no two angles are the same.
Surface space that is measured in square units.
The distance around a figure.
The distance around a circle (the perimeter of a circle).
The figure formed when two rays meet at a common endpoint called a vertex.
A number that is a factor of two or more numbers.
Two angles whose sum equals 90 degrees.
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.
greatest common factor (GCF)
The largest single factor for two or more numbers.
A polygon with six sides.
All whole numbers (both positive and negative) and zero.
The sum of a group of numbers divided by the number of numbers. Also known as the average.
A value found by ordering a group of data from least to greatest and choosing the middle value of the group.
In a group of values, the value that occurs most often.
The part of a fraction that stands for how many parts of a whole or group are included in the fraction.
A polygon that has four sides.
A quadrilateral with two pairs of congruent, parallel sides.
A parallelogram with four right angles
Part of the population that is studied to find the characteristics of the whole population.
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.
The part of a fraction that stands for the number of equal parts a whole or group is divided into.
In an equation made up of two fractions, the numerator of one fraction times the denominator of the other fraction.
A fraction with a numerator that is larger than or equal to its denominator.
Two or more fractions that have the same denominator
least common multiple (LCM)
The smallest multiple that two or more numbers have in common
A value that combines a whole number and a fractional amount
An eight-sided polygon
Lines in the same plane that do not intersect. The symbol //
The ratio of a number to 100 (per one hundred). The symbol %
Breaking down a composite number until all of the factors are prime
The likelihood that an event will occur. The probability that an event will occur is 0, 1, or somewhere between 0 and 1.
A length that is half the diameter of a circle; the distance from the center of the circle to the circle itself.
An angle that measures 90 degrees
A triangle with one right angle
Two angles whose sum is 180 degrees
order of operations
Rules that tell which steps to follow when solving an expression.
Operations that do the exact opposite of each other; they undo each other (addition and subtraction, for example)
A fraction with all common factors (other than 1) factored out of the numerator and denominator
The value that shows the relationship of a circle's circumference to its diameter; it has an approximate value of 3.14
A solid figure that has two congruent, parallel polygons as its bases. Its sides are parallelograms
A comparison of the two values of two numbers
An equation stating that two ratios are equal
To make a fraction easier to work with by taking out common factors. In an expression, combining variables that have like unknowns.
A unit for measuring area
A ratio that shows the cost per unit of measure
The horizontal number line of a coordinate graph
The vertical number line of a coordinate graph
The value on the x-axis used to locate a point on the coordinate graph. It is the first value in an ordered pair.
The value on the y-axis used to locate a point on the coordinate graph. It is the second value in an ordered pair.