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PSSA Math Anchor Glossary
PSSA Review Activity
34
Mathematics
6th Grade
01/20/2006

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Cards

Term
Chord
Definition
A line segment whose endpoints are on a circle.
Term
Circumference
Definition
The distance around a circle.
Term
Composite number
Definition
A whole number having more than two factors.
Term
Diameter
Definition
A line segment that has endpoints on a circle and passes through the center of the circle.
Term
Expanded notation
Definition
A way to write numbers that shows the value of each digit

(e.g., 4372 = 4000+300+70+2).
Term
Greatest common factor (GCF)
Definition
The largest factor that 2 or more numbers have in common.
Term
Heptagon
Definition
A polygon with 7 sides.
Term
Histogram
Definition
A bar graph in which the labels for the bars are numerical intervals.
Term
Hypotenuse
Definition
The longest side of a right triangle (which is also the side opposite the right angle).
Term
Least common denominator (LCD)
Definition
The least common multiple of the denominators in two or more fractions.
Term
Least common multiple (LCM)
Definition
The smallest number, other than zero, that is a common multiple of two or more numbers.
Term
Leg (of a right triangle)
Definition
Either of the two sides that form the right angle in a right triangle
Term
Line plot
Definition
A graph showing the frequency of data on a number line.
Term
Nonagon
Definition
A polygon with 9 sides.
Term
Plane
Definition
A flat surface that extends infinitely in all directions.
Term
Prime number
Definition
A whole number that has exactly two factors, 1 and itself.
Term
Quadrants
Definition
The four regions of a coordinate plane that are separated by the axes.
Term
Radius
Definition
A line segment that has one endpoint on a circle and the other endpoint at the center of the circle.
Term
Range
Definition
The difference between the greatest and least numbers in a set of data.
Term
Rate
Definition
A ratio that compares two quantities having different units (e.g., 95 miles in 2 hours).
Term
Ratio
Definition
A comparison of two numbers using division.
Term
Regular polygon
Definition
A polygon that has all sides congruent and all angles congruent.
Term
Repeating decimal
Definition
A decimal that has a repeating sequence of numbers after the decimal point.
Term
Similar polygons
Definition
Polygons that have the same shape, but not necessarily the same size. Corresponding sides of similar polygons are proportional.
Term
Straight angle
Definition
An angle with a measure of 180º.
Term
Terminating decimal
Definition
A decimal that contains a finite number of digits.
Term
Transformation
Definition
The moving of a figure by a translation (slide), rotation (turn) or reflection (flip).
Term
Unit price
Definition
The price of a single item or amount (e.g., $3.50 per pound).
Term
Unit price
Definition
The price of a single item or amount (e.g., $3.50 per pound).
Term
Unit rate
Definition
A rate with the second term being one unit (e.g., 50 mi/gal, 4.5 km/sec).
Term
Venn diagram
Definition
A diagram that shows relationships among sets of objects.
Term
Whole number
Definition
Any of the numbers 0, 1, 2, 3, 4, 5, … (and so on).
Term
X-axis
Definition
The horizontal number line on a coordinate plane.
Term
Y-axis
Definition
The vertical number line on a coordinate plane
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