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PSSA VOCABULARY REVIEW

Words you need to know.

AB
Composite NumberNumber you can break down, has more than 2 factors
Prime NumberNumber you can't break down, can only be divided by one and itself
SumAdd
ProductMultiply
ProbabilityWhat is the chance something will happen?
FrequencyHow often something happens
Linegoes on forever in both directions
Raygoes in one direction from a point
Acute Anglea cute little angle, less than 90 degrees
Right angle90 degrees (square corner)
Obtuse angleopens wide, bigger than 90 and less than 180
PerimeterThe distance AROUND an object
Areathe space inside a 2-d shape(squared units)
Volumehow much space is inside a 3-d shape(cubed units)
Polygonmany sided shape
Quadralateralany 4 sided shape
Parallelogramhas 2 sets of parallel sides
Trapezoidhas 1 set of parallel sides
Rectanglehas 2 sets of parallel sides, 4 right angles
Square4 congruent sides, 4 right angles, parallel sides
Congruentexactly the same
Similarsame shape but bigger or smaller
pentagon5 sides
hexagon6 sides
cylinderShape like a soup can
Rectangular Prismshape like a cereal box
vertexcorner
edgewhere faces come together
Faceflat part of a 3-d shape
sphere3-d circle (globe)
line of symmetrya line on which a figure can be folded so that the two parts match
Translationslide, same shape different location
Rotationsame shape turned around a point
Reflectionmirror image or flip
Perpendicular linescross to make 90 degree angles
Parallel linesnever, ever touch
EquivalentThe same
VariableLetter that represents a number
MeanAverage, add and divide
MedianPut the numbers in order, find the middle
ModeMost common
RangeHigh number - Low number
The place value to the right of a decimaltenths
place value two spots to the right of a decimalhundredths
place value 3 spots to the right of a decimalthousandths
kilomeans 1000
octogon8 sides
Coordinatetwo points that describe a specific place
Intervalspace between two lines
Least Common MultipleSmallest number they can both "go into", make lists of multiples
Greatest Common FactorBiggest factor 2 numbers have in common. GCF of 24 and 16 =8
rhombus4 congruent sides, can be a diamond or a square
Evaluatesolve the problem
Quotientanswer to a division problem
mixed numbermade up of a whole number and a fraction
outcomeresult of an experiment
lengthmeasures distance
Intersecting lineslines that cross or meet at one point
Isosceles trianglehas at least two sides of equal length
radiusline from edge of a circle to the middle
circumferencedistance around a circle
diameterdistance across a circle through the middle
compatible numberseasy to work with (divide easy)
weightmeasure of how heavy an object is
outcomeresult of an experiment
pictographgraph using symbols or pictures
simplest formthe form of a fraction (can't be broken down)
Explain your ReasoningSHOW AND DESCRIBE EVERYTHING!! WRITE IT DOWN
Improper FractionNumerator is bigger than the denominator
Common DenominatorSame number on the bottom of 2 fractions

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