Studied by 191 people
sum of interior angles
180(n-2)
regular interior angle
180 - (360/n)
reg exterior angle
360/n
sum of ext angles
360
number of diagonals
n(n-3) / 2
atht- hyp geom mean
h^2 = xy
atht- leg geom mean
a^2= yc / b^2= xc
distance theorem
30-60-90
x, x√3, 2x
45-45-90
x, x, x√2
rectangle area
bh
square area
s^2
pgram area
bh
triangle area
bh / 2
trapezoid area
(b1-b2 / 2) h
kite area
(d1 * d2) / 2
equilateral triangle area
(s^2 √3) / 4
polygon area
( apothem * perimeter ) / 2
sector area
prism lateral area
perimeter * height
prism surface area
2*base area + perimeter * height
prism volume
base area * height
pyramid lateral area
1/2 (perimeter * slant height)
pyramid surface area
base + 1/2 (perimeter * slant height)
pyramid volume
(1/3) * base area * height
sphere surface area
4πr^2
sphere volume
(4/3)πr³
cylinder lateral area
2πrh
cylinder surface area
2πrh + 2πr^2
cylinder volume
base area * height
cone lateral area
πr𝓁
cone surface area
πr𝓁 + πr^2
cone volume
(1/3) * base area * height
Note 
Flashcard (98)