Geometry
Area of a triangle using angle and sides
What is 1/2 ab sin C?
Sum of first n terms
What is n(n+1)/2?
Cards in a deck
What is 52?
Sine formula
What is opposite over hypotenuse?
Number of feet in a mile
What is 5280?
Sum of measures of external angles in an n-gon
What is 360◦?
Sum of first n odd terms
What is n^2?
Permutations Formula
What is n!/(n-r)! ?
cotangent formula
what is adjacent over opposite or one over tangent?
Number of oz in a pound
What is 16?
Diagonals in an n-gon
What is n(n−3)/2 ?
Sum of first n even terms
What is n(n + 1) ?
Whoever picks this automatically gets 300 points! If they think of a question or formula to add to this game by the end of the game, they get 600 points instead!
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Tangent of 30 degrees
what is sqrt(3)/3?
Metric prefix for 10^2
What is hecto-?
Heron's Formula-- Area of a Triangle
A = sqrt( s(s − a)(s − b)(s − c))
Sum of infinite geometric series
What is a1/(1-r) ?
Combinations Formula
What is n!/r!(n-r)!
Cosine of 60 degrees
What is 1/2?
Number of tablespoons in a cup
What is 16?
Edges on a dodecahedron
What is 30?
Expansion of a^3 − b^3
What is (a − b)(a^2 + ab + b^2)?
Probability of rolling a sum s on two dice when s<=7
What is (s-1)/36 ?
Law of Cosines
What is c^2 = a^2 + b^2 − 2ab cos C ?
Number of cm per inch
What is 2.54