Geometry Formulas Sheet
Rectangle
Square
A = lw
s
h
Parallelogram
l
w
A = s2
Trapezoid
1
h(b1
2
A
=
b1
s1
l
P = 4s
Triangle
s2
h
P = 2l + 2w
r
Circle
b
b2
P = s1
s2
1
A = bh
2
b1 b2
Rectangular
Solid
h
Cube
w
d
r2
A=
P = s1
s2
b
C =2
s
s
r or C =
Right
Circular
Cylinder
s
l
V = lwh
V = s3
Sphere
r
r
3
S= 4
r
2
V=
1
3
r
s
h
R
s(R r)
V=
(r
2
2
rR R )h
3
S= 2
r
r r
A = Area
P = Perimeter
V = Volume
S = Surface Area
C = Circumference
π = PI Constant
A
m
A
2
h
2
V=
vector AB
right angle
measure of angle A
AB
line segment AB
AB
measure of line
AB CD
segment AB line AB
A >
ABC
triangle ABC
A ,
ABCD
rectangle ABCD
ABCD
parallelogram ABCD
AB
www.AllFreePrintable.com
l
1
lwh
3
AB
angle A
r2
h
w
r 2h
Geometric
Symbols
rh 2
Square or
Rectangular
Pyramid
h
S=
Right Circular
Cone Frustum
h
r
S = 6s2
Right
Circular
Cone
d
r 2h
V=
S = 2lh + 2wh + 2wl
S=
s1
A = lh
s2
h
4
V=
3
P = 2l + 2w
b2 )
w
AB
Line AB is parallel to line CD.
CD
Line AB is perpendicular to line CD.
B
B
Angle A is congruent to angle B.
Triangle A is similar to triangle B.
Similarly marked segments are
congruent.
Similarly marked angles are
congruent.