# WGU_QL_Formulas.txt

 Measure of angles for triangle and Polygons Sum of the three angles for a triangle is Area reviewSquared units rectangles A=L*WSquaresA=s2ParaellogramA=b*hTrianglesA=1/2*b*hTrapezoidsA=1/2*h*(a+b) Circles Volume and Surface area Factoring Quadratic equations Sequences Arithmetic Found by adding a common number to the first term and then to the second term etc. Find this common term by subtracting a 2nd number from 1st etc. Be sure to spot the pattern. To find the Nth term – use a formula Where a1 = first term of sequence an = the term you wish to find d= common difference n – place position of the term IE Find term 20 – n = 20 an= a1 + d(n-1) Geometric Sequences Found by multiplying a common number from 1 term to the next. For example multiplying 3 by the first term and then multiplying 3 by the first number etc. Find the common ratio by problem solving and spotting the pattern. Can do this by dividing the 2nd term by the first term – this is called the common ratio. Can use decimals or fractions. To find the Nth term – use a formula Use exponents ( r = common ratio) an = a1 x r n-1 Authorghstechnology ID82467 Card SetWGU_QL_Formulas.txt Descriptionmath Updated2011-04-28T12:36:51Z Show Answers