Math Formulas Masterlist | A+ Graded Quick
Guide for Tests and End Term Exams
Exterior angles of a regular polygon add up to - ✔✔360
sum of interior angles of a polygon - ✔✔(n-2)180
N- number of sides
if the polygon is regular and has n sides, then each exterior angle.. - ✔✔= 360/n
If a polygon is "regular," what does that mean? - ✔✔All angles are the same size and all sides
are the same length.
completing the square - ✔✔(x+(b/2)^2 + c - (b/2)^2
Exponential decay - ✔✔P(1-r/100) to the power of t
Area of a sector - ✔✔x°/360 times (∏r²), where x is the degrees in the angle
Length of an arc - ✔✔2πr(xdegrees/360)
Exponentially infers - ✔✔Compound interest
Real numbers - ✔✔All rational and irrational numbers
Rational numbers - ✔✔All positive and negative integers, fractions and decimal numbers.
Irrational numbers - ✔✔Any real number which cant be expressed as a fraction of two
integers
, Profit percentage - ✔✔profit/cost price x 100
Loss percentage - ✔✔loss/cost price x 100
Area of a circle - ✔✔A=πr²
Perimeter of a circle - ✔✔2πr (circumference)
Area of a semicircle - ✔✔A=½πr²
Perimeter of semicircle - ✔✔P = ½ x pi x diameter + diameter
Total surface area for cylinder - ✔✔2πrh + 2πr²
Total surface area for cone - ✔✔Pi x r (l + r)
Surface area of pyramid - ✔✔Base area + area of the shapes on the sides
Volume of pyramid - ✔✔1/3 x area of base x height
Surface area of hemisphere - ✔✔2π r²
Volume of hemisphere - ✔✔2/3πr³
Corresponding angles - ✔✔C shape
Alternate angles - ✔✔Z shape
Guide for Tests and End Term Exams
Exterior angles of a regular polygon add up to - ✔✔360
sum of interior angles of a polygon - ✔✔(n-2)180
N- number of sides
if the polygon is regular and has n sides, then each exterior angle.. - ✔✔= 360/n
If a polygon is "regular," what does that mean? - ✔✔All angles are the same size and all sides
are the same length.
completing the square - ✔✔(x+(b/2)^2 + c - (b/2)^2
Exponential decay - ✔✔P(1-r/100) to the power of t
Area of a sector - ✔✔x°/360 times (∏r²), where x is the degrees in the angle
Length of an arc - ✔✔2πr(xdegrees/360)
Exponentially infers - ✔✔Compound interest
Real numbers - ✔✔All rational and irrational numbers
Rational numbers - ✔✔All positive and negative integers, fractions and decimal numbers.
Irrational numbers - ✔✔Any real number which cant be expressed as a fraction of two
integers
, Profit percentage - ✔✔profit/cost price x 100
Loss percentage - ✔✔loss/cost price x 100
Area of a circle - ✔✔A=πr²
Perimeter of a circle - ✔✔2πr (circumference)
Area of a semicircle - ✔✔A=½πr²
Perimeter of semicircle - ✔✔P = ½ x pi x diameter + diameter
Total surface area for cylinder - ✔✔2πrh + 2πr²
Total surface area for cone - ✔✔Pi x r (l + r)
Surface area of pyramid - ✔✔Base area + area of the shapes on the sides
Volume of pyramid - ✔✔1/3 x area of base x height
Surface area of hemisphere - ✔✔2π r²
Volume of hemisphere - ✔✔2/3πr³
Corresponding angles - ✔✔C shape
Alternate angles - ✔✔Z shape
