Geometry Formula Sheet
Geometric Formulas
b1
h
h
h
h
B
b2
b
A = 12 bh
l
V = Bh
L.A. = hp
S.A.= L.A. + 2B
A = 12 h(b1 + b2 )
V = 13 Bh
L.A.= 12 lp
S.A.= L.A. + B
r
w
r
l
A = pr2
C = 2pr
A = lw
p = 2(l + w)
V = pr2h
L.A.= 2prh
S.A.= 2pr(h + r)
b
h
l
h
h
l
w
V = lwh
S.A.= 2lw + 2lh + 2wh
V = 13 pr2h
L.A.= prl
S.A.= pr(l + r)
Meaning
angle A
m
measure of angle A
A
Example
AB
line segment AB
AB CD
AB
measure of
line segment AB
AB CD
AB
line AB
A>
ABC
triangle ABC
A,
ABCD
rectangle ABCD
ABCD
parallelogram ABCD
Meaning
vector AB
right angle
AB
c
a
c2
=
b
2
a + b2
Abbreviations
Geometric Symbols
Example
A
V = 43 pr3
S.A.= 4pr2
r
b
A = bh
r
h
Line AB is parallel to
line CD.
Line AB is perpendicular
to line CD.
B Angle A is congruent to
angle B.
B Triangle A is similar to
triangle B.
Similarly marked
segments are congruent.
Similarly marked angles
are congruent.
© 2003 by the Commonwealth of Virginia Department of Education, James Monroe Building, 101 N. 14th Street,
Richmond, Virginia, 23219. All rights reserved. Except as permitted by law, this material may not be reproduced or used
in any form or by any means, electronic or mechanical, including photocopying or recording, or by any information storage
or retrieval system without written permission from the copyright owner. Please contact the Commonwealth of Virginia
Department of Education at (804) 225-2102, Division of Assessment and Reporting, to request written permission.
Volume
Lateral Area
Total Surface
Area
Area of Base
V
L.A.
S.A.
B
Pi
p < 3.14
p < 227
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