Geometry Formulas Flashcards
(11 cards)
1
Q
Formula for acute triangle
A
A^2+B^2>C^2
2
Q
Formula for obtuse triangle
A
A^2+B^2<C^2
3
Q
Law of Sine
A
A/sin(a) = B/sin(b)
4
Q
Law of Cosine
A
C^2 = A^2+B^2-2(A•B)cos(c)
Cos(c) = A^2+B^2-C^2 / 2(A)(B)
5
Q
Length of arc
A
(n/360)2pi•r
6
Q
Area of sector
A
(n/360)pi•r^2
7
Q
Formula of regular polygon
A
1/2 a•p
8
Q
Sa and V of pyramid
A
Sa=1/2 Pl+b
V=1/3 b•h
9
Q
Sa and V for cone
A
Sa=b+pi•r•l
V=h/3 pi•r^2
10
Q
Sa and V for prism
A
Sa=2b+ph
V=bh
11
Q
Sa and V for sphere
A
Sa=4pi•r^2
V==4/3 pi•r^3
