Circumference of a circle
Perimeter of an equilateral triangle
Area of an equilateral triangle
Sum of integers 1 through N inclusive
Distance between two points
Perimeter of a parallelogram
((y2-y1)^2+(x2-x1)^2)^0.5
(-b±(b^2-4ac)^0.5)/2a
(y2-y1)/(x2-x1)
0.5(b1+b2)h
0.5bh
2(l+w)
2πr
3s
4s
adj/hyp
a^2+b^2=c^2
a^2-b^2
a^2±2ab+b^2
bh
n!/(k!(n-k)!)
N(N+1)/2
opp/adj
opp/hyp
sinA/a=sinB/b=sinC/c
s^2
s^2(3^0.5)/4
π(r1)(r2)
πr^2
Correct!
Incorrect
You left this blank