Maths Formulas n Stuff Flashcards
1
Q
z rule
A
alternate angles
2
Q
f rule
A
corresponding
3
Q
u rule
A
cointerior
4
Q
2 angles add to 90*
A
complementary
5
Q
2 angles add to 180*
A
supplementary
6
Q
polygon angle sum
A
s = 180 ( n - 2 )
7
Q
regular polygon 1 angle
A
180 ( n - 2 )
_______
n
8
Q
angles in a triangle
A
c = a + b
9
Q
when to flip sign in inequalities
A
when multiplying or dividing by a negative
10
Q
formula for a gradient
A
y2-y1
____
x2-y1
11
Q
SA of a cylinder
A
2 π r ( r + h )
12
Q
SA of a cone
A
π r ( r + s )
13
Q
SA of a sphere
A
4 π r ²
14
Q
SA of a prism
A
2 * Area fo Base + (Perimeter of base * h )
15
Q
opposite of sinθ
A
cscθ
