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81 Cards in this Set
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Angle

A figure formed by two line segments or rays that share the same endpoint


Acute Triangle

A triangle with three acute angles


Acute Angle

An angle that has a measure less than a right angle (less than 90 degrees)


Composite Number

A number that has more than two factors
121,3,4,12 

Congruent

Having the same size and shape


Compatible Numbers

Nearby numbers that are easy to compute mentally


Divisible

Capable of being divided so that the quotient is a whole number and the remainder is zero


Decimal

A number with one or more digits to the right of the decimal point
875635935(.)525325 

Factor Tree

A diagram that shows the prime factors of a number


Doublebar Graph

A graph used to compare similar kinds of data


Denominator

The number below the bar in a fraction that tells how many equal parts are in the whole or group


Equation

A number sentence which states that two amounts are equal


Equilateral Triangle

A triangle with three congruent sides


Expression

A part of a number sentence that has numbers and operation signs but does not have an equal sign


Face

A polygon that is a flat surface of a solid figure


Event

One outcome or a combination of outcomes in an experiment


Equivalent Fractions

Two or more fractions that name the same amount Example: 1/2 = 2/4


Fraction

A number that names a part of a whole


Frequency

The number of times a response occurs


Hexagon

A polygon with six sides and six angles


Gallon (gal)

A customary unit for measuring capacity; equivalent to 4 quarts or 8 pints


Leaf

A ones digit in a stemandleaf plot


Intersecting lines

Lines that cross each other at exactly one point


Interval

The distance between two numbers on the scale of a graph


Like Fractions

Fractions with the same denominator


Inverse Operations

Operations that undo each other, like addition and subtraction, or multiplication and division


Isosceles Triangle

A triangle with only two conguent sides


Line

A straight path in a plane, extending in both directions with no endpoints


Line Plot

A graph that shows the frequency of data along a number line


Line Graph

A graph that uses a line to show how data change over a period of time


Line Segment

A part of a line that has two endpoints


Meter (m)

A unit of length in the metric system; equivalent to 100 centimeters


Negative Numbers

All the numbers to the left of zero on the number line


Mathmatical Probability

A comparison of the number of favorable outcomes to the number of possible outcomes of an event


Median

The middle number in an ordered set of data


Mean

The average of a set of numbers, found by dividing the sum of the set by the number of addends


Milliliter (mL)

A unit of capacity in the metric system; 1,000 of them equals 1 liter


Mode

The number or item that occurs most often in a set of data


Multiple

The product of a given whole number and another whole number


Obtuse Triangle

A triangle with one obtuse angle


Numerator

The number above the bar in a fraction that tells how many parts of the whole or group are being considered


Obtuse Angle

An angle that has a measure greater than a right angle (greater than 90 degrees)


Octagon

A polygon with eight sides and eight angles


Ounce (oz)

A customary unit used for measuring weight; 16 of them equals 1 pound


Outcomes

The possible results of an experiment


Opposites

Numbers on the number line which are the same distance from 0


Ordered Pair

A pair of numbers used to locate a point on a coordinate grid. The first number tells how far to move horizontally, and the second number tells how far to move vertically


Order of Operations

Rules for performing operations in expressions with more than one operation; do the operations inside parentheses, then multiply and divide from left to right, then add and subtract from left to right


Parallel Lines

Lines that never intersect


Positive Numbers

All numbers to the right of zero on the number line


Parallelogram

A quadrilateral whose opposite sides are parallel and congruent


Pentagon

A polygon with fives sides and five angles


Perimeter

The distance around a figure


Perpendicular Lines

Lines that intersect to form four right angles


Quadrilateral

A polygon with four sides and four angles


Point

A location on an object or in space


Plane

A flat surface that extends without end in all directions


Prime Factor

A factor that is a prime number


Prime Number

A number that has only two factors: 1 and itself


Polygon

A closed plane figure with straight sides; Each side is a line segment


Stemandleaf Plot

A table that shows groups of data arranged by place value


Simplest Form

A fraction is in this form when 1 is the only numer that can divide evenly into the numerator and the denominator


Scalene Triangle

A type of triangle with no congruent sides


Similar

Having the same shape as something else but possible different in size


Right Angle

An angle that forms a square corner and has a measure of 90 degrees


Regular Polygon

A polygon that has sides that are the same length


Rhombus

A parallelogram with four congruent sides and with opposite angles that are congruent


Translation

A movement of a figure to a new position without turning or flipping it


Ray

A part of a line; begins at one endpoint and goes on forever in one direction


Square Number

The product of a number and itself


Range

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


Right Triangle

A triangle with one right angle


Vertex

The point at which two rays of an angle or two or more line segments meet in a plane figure, or where three or more sides meet in a solid figure


Scale

A series of numbers placed at fixed distances on a graph to help label the graph


Stem

A tens digit in a stemandleaf plot


Straight Angle

An angle that has a measure of 180 degrees


Unlike Fractions

Fractions with different denominators


Variable

A letter or symbol that stands for any number


Volume

The measure of the space a solid figure occupies


Unlikely

Having a less than even chance of happening


Venn Diagram

A diagram that shows relationships among sets of things
