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# Math STAAR Voc.

### vocabulary

TermDefinition
polygon A closed flat figure with straight lines
hexagon 6 sided polygon
pentagon 5 sided polygon
octagon 8 sided polygon
congruent same size, same shape
Parallelogram A quadrilateral with two pairs of parallel sides
Trapezoid a quadrilateral with only one pair of parallel sides
square 4 equal sides and 4 right angles
parallel lines lines that never meet or intersect
perpendicular lines Lines that intersect to form right angles, X and Y axis are perpendicular
right angle 90 degree angle
acute angle less than 90 degrees
obtuse angle more than 90 degrees
isosceles triangle A triangle that has 2 equal sides.
scalene triangle a triangle with no congruent sides
equilateral triangle a triangle with 3 congruent sides and acute
coordinates Ordered pairs that identify points (x,y)
origin (0,0) where x axis and y axis intersect
order of operations PEMDAS
Q P T R R S quadrilateral, parallelogram, trapezoid, rectangle, rhombus, square
cube all sides are equal
Adding Fractions with Unlike Denominators Find the LCM
multiply decimals 0.289 X 31
difference subtract
product multiply
quotient divide
tenths The first place value after a decimal point.
hundredths The second place value after a decimal point.
thousandths The third place value after a decimal point.
estimate round
dozen 12
twice times 2
greater than >
less than <
half 0.5
1/4 0.25
3/4 0.75
one whole 8/8 or 2/2
divide fractions K C F keep change flip
multiply decimals Multiply like normal, count the decimal place values and move the decimal in the product
expanded notation (7x1) + (3x0.1) + (5x0.01)
0.001 one thousandth
13/2 improper fraction: Divide
divide decimals move the decimal up and divide
area Length x Width
perimeter add up all sides l+l+w+w
volume L x W x H
PEMDAS Parentheses, Exponents, Multiply or Divide, Add or Subtract
rectangle a quadrilateral with four right angles
Rhombus A parallelogram with four equal sides
income tax based on the money you earn from a job, personal
property tax A tax on the value of a property, land, house
sales tax A tax on a sale of merchandise or services, buy goods
payroll tax tax an employer withholds from paycheck, Social Security and Medicare
x axis horizontal axis, laying down
y axis vertical axis, standing up
multiplicative pattern the rule is multiplying x
Created by: Mrs. Salas 5th
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