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90 terms

LTMS 6th Grade Honors Math End of Yr Vocab

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Acute Angle
An angle that measures less than 90 degrees
Adjacent Angles
Angles in the same plane that have a common vertex and a common side
Angle
A figure formed by two rays with a common endpoint called the vertex
Area
The number of square units needed to cover a given surface
Average
The sum of the items in a set of data divided by the number of items in the set; also called mean
Circle
The set of all points in a plane that are the same distance from a given point called the center
Circumference
The distance around a circle
Clustering
A method used to estimate a sum when all addends are close to the same value
Complementary Angles
Two angles whose measures add to 90 degrees
Composite Number
A number greater than 1 that has more than two whole-number factors
Congruent
Having the same size and shape
Cross Product
The product of numbers on the diagonal when comparing two ratios
Customary System
The measurement system often used in the United States
Denominator
The bottom number of a fraction that tells how many equal parts are in the whole
Diameter
A line segment that passes through the center of a circle and has endpoints on the circle, or the length of that segment
Difference
The result when one number is subtracted from another
Dividend
The number to be divided in a division problem
Divisible
Can be divided by a number without leaving a remainder
Divisor
The number you are dividing by in a division problem
Endpoint
A point at the end of a line segment or ray
Expanded Form
A number written as the sum of the values of its digits
Exponent
The number that indicates how many times the base is used as a factor
Factor
A number that is multiplied by another number to get a product
GCF (Greatest Common Factor)
The largest common factor of two or more given numbers
Improper Fraction
A fraction in which the numerator is greater than or equal to the denominator
Indirect Measurement
The technique of using similar figures and proportions to find a measure
Integer
A member of the set of whole numbers and their opposites
Intersecting Lines
Lines that cross at exactly one point
Interval
The space between marked values on a number line or the scale of a graph
Inverse Operations
Operations that undo each other: addition and subtraction, or multiplication or division
LCD (Least common denominator)
The least common multiple of two or more denominators
LCM (Least common multiple)
The smallest number, other than zero, that is a multiple of two or more given numbers
Like Fractions
Fractions that have the same denominator
Line
A straight path that extends without end in opposite directions
Line of Reflection
A line that a figure is figure is flipped across to create a mirror image of the original figure
Line of Symmetry
The imaginary "mirror" in line symmetry
Mean
The sum of the items in a set of data divided by the number of items in the set; also called average
Median
The middle number or the mean (average) of the two middle numbers in an ordered set of data
Metric System
A decimal system of weights and measures that is used universally in science and commonly throughout the world
Mixed Number
A number made up of a whole number that is not zero and a fraction
Mode
The number or numbers that occur most frequently in a set of data; when all numbers occur with the same frequency, we say there is no mode
Multiple
A multiple of a number is the product of the number and any nonzero whole number
Negative Number
A number less than zero
Net
An arrangement of two-dimensional figures that can be folded to form a polyhedron
Numerator
The top number of a fraction that tells how many parts of a whole are being considered
Obtuse Angle
An angle whose measure is greater than 90 degrees but less than 180 degrees
Odd Number
A whole number that is not divisible by two
Opposites
Two numbers that are an equal distance from zero on a number line
Order of Operations
A rule for evaluating expressions: first perform the operations in parentheses, then compute powers and roots, then perform all multiplication and division from left to right, and then perform all addition and subtraction from left to right
Parallel Lines
Lines in a place that do not intersect
Percent
A ratio comparing a number to 100
Perimeter
The distance around a polygon
Perpendicular Lines
Lines that intersect to form right angles
Pi
The ratio of the circumference of a circle to the length of its diameter; 3.14 or 22/7
Plane
A flat surface that extends forever
Point
An exact location in space
Polygon
A closed plane figure formed by three or more line segments that intersect only at their endpoints
Polyhedron
A three-dimensional figure in which all the surfaces or faces are polygons
Positive Number
A number greater than zero
Prime Factorization
A number written as the product of its prime factors
Prime Number
A whole number greater than 1 that has exactly two factors, itself and 1
Prism
A polyhedron that has two congruent, polygon-shaped bases and other faces that are all rectangles
Product
The result when two or more numbers are multiplied
Proportion
An equation that states that two ratios are equivalent
Protractor
A tool for measuring angles
Pyramid
A polyhedron with a polygon base and triangular sides that all meet at a common vertex
Quadrant
The x- and y-axes divide the coordinate plane into four regions. Each region is called a quadrant.
Quotient
The result when one number is divided by another
Radius
A line segment with one endpoint at the center of a circle and the other endpoint on the circle, or the length of that segment
Range
The difference between the greatest and least values in a data set
Rate
A ratio that compares two quantities measured in different units
Ratio
A comparison of two quantities by division
Reciprocal
One of two numbers whose product is 1
Reflection
A transformation of a figure that flips the figure across a line
Regular Polygon
A polygon with congruent sides and angles
Rotation
A transformation in which a figure is turned around a point
Scientific Notation
A method of writing very large or very small numbers by using powers of 10
Similar
Figures with the same shape but not necessarily the same size are similar
Skew Lines
Lines that lie in different planes that are neither parallel nor intersecting
Straight Angle
An angle that measures 180 degrees
Sum
The result when two or more numbers are added
Supplementary Angles
Two angles whose measures have a sum of 180 degrees
Surface Area
The sum of the areas of the faces, or surfaces, of a three-dimensional figure
Transformation
A change in the size or position of a figure
Translation
A movement (slide) of a figure along a straight line
Variable
A symbol used to represent a quantity that can change
Vertex
On an angle or polygon, the point where two sides intersect
Vertical Angles
A pair of opposite congruent angles formed by intersecting lines
Volume
The number of cubic units needed to fill a given space
Zero Pair
A number and its opposite, which add to 0