##### SAT Math 2
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#### Complete list of Terms and Definitions for SAT Math 2

Terms Definitions
3^2 9
23^2 529
pythagorean theorem a²+b²=c²
divisive (dih-vahy-siv) discordant, disruptive
digit the numbers 0-9
hubris (hyoo-bris) pertension, nerve
45-45-90 triangle x, x, x√2
volume of a sphere V=.75∏r³
positive numbers greater than 0
triangle inequality theorem z=third side...Ix-yI<z....x+y>z
Sum The result of adding numbers
Area of a Circle = πr2
odd numbers not divisible by 2
Distance formula root (x1-x2)^2 + (y1-y2)^2
relation A set of ordered pairs (x,y)
subtracting exponents x^a / x^b = x^(a-b)
Mean (Average) mean = total/# of things
Rational Numbers All positive and negative integers, fractions and decimal numbers.
prime factors 2, 3, 5, 7, 11, ...
Complementary sum of angles that equals 90 degrees
factor a number that evenly divides into another number
Circumference The "length" of a circle, measured from one point and then all the way around back to that point. The perimeter of a circle.
logarithms y = log(little b)x asks b^y = x
How many sections are on the SAT math? 3
how many math sections are on the test three
Empirical verification the scientific way of learning answers to questions, in which knowledge is developed, demonstrated, and double-checked through experiments
similar triangles have the same angle measures and proportional side lengths
Irrational numbers any numbers that does not end or repeat
Graphing ≥ or ≤ on a coordinate plane solid line
prime numbers/prime factorization prime number is a positive integer that has two factors, 1 and itself for prime factorization, factor the number and then pick out the prime numbers
Inverse Variation y varies inversely as x; as increases y decreases; as x decreases y increases; xy=k or y=k/x;
Sector The part of a circle that looks like a piece of pie. A sector is bounded by 2 radii and an arc of the circle.
Characteristics of a Parallelogram A parallelogram has two pairs of parallel sides, opposite sides are equal, opposite angles are equale, consecutive angles add up to 180 degrees
geometric sequence a sequence in which each term is found by multiplying the previous term by the same number
distance between (x₁, y₁) and (x₂, y₂): _________________________ √(x₂-x₁)² + (y₂-y₁)² = √(Δx)² + (Δy)² *note: Δ means difference
How do they help you? SAT MATH, Video with strategies, and Practice quizes
what are the sections in sat math 25 min sec., 20 min sec.
domain & range the domain of a function is the set of values for which the function is defined. The range of a function is the set of outputs or results of the function.
quadratic function y = a (x - h)2 + k, where the vertex of the parabola is at the point (h, k) and a ≠ 0. If a > 0, the parabola opens upward; and if a < 0, the parabola opens downward.
what type of questions does it hold in both sections it holds 54 which 44 are multiple questions.
17^2 289
sin2x 2sinxcosx
cos (A+B) cosAcosB-SinASinB
ratios parts to parts
Probability Probability=desired outcomes/total outcomes
superficial (soo-per-fish-uhl) inattentive, ignorant
rectangle area area = lw
full circle = 360 degrees
volume of a cone 1/3piR^2(H)
tenet (ten-it) assumption, impression, opinion
cylinder surface area 2(pie)r(squared) + 2(pie)(r)(H)
parallel slopes slopes that are equal
sum of A S n(a1 +an)/2
elixir (ih-lik-ser) principle, medicine, solution, mixture
cos of an angle adj / hyp
difference of squares a^2 -b^2 = (a+b)(a-b)
similar same shape, corresponding angles are equal, corresponding sides are in proportion
different not considering the order of things
addiong & subtracting polynomials combine loke terms
range the set of all possible "y" values
Multiplying Fractions To multiply fractions, multiply the numerators and multiply the denominators
domain the set of all possible "x" values
0 not positive or negative, is an integer, whole #, gigit, not a remainder, even #
quadrilateral A flat shape with four straight sides.
equal every point outside a circle has tan lines on the circle that are _________
prime number an integer that has no integral factors but itself and 1
Plug-in Asks you to find a fraction a %,
eminent (em-uh-nuhnt) well-known; high in station, rank or repute
Multiples ex. multiples of 20 are 40, 60, 80, 100, ...