 |
positive,
plus, add |
|
 |
perpendicular |
 |
negative,
minus, subtract |
|
 |
angle |
| ¡Â |
divide |
|
 |
degree(s) |
| ¡Á |
times, multiply |
|
 |
triangle |
| = |
is equal to |
|
 |
is approximately
equal to |
 |
is not equal
to |
|
 |
is similar
to |
| < |
is less than |
|
 |
is parallel
to |
| > |
is greater
than |
|
 |
infinity |
 |
is less than
or equal to |
|
 |
pi, 3.14159 |
 |
is greater
than or equal to |
|
 |
is congruent
to |
| ( ) |
Parentheses
(grouping symbol) |
|
 |
therefore |
| [ ] |
Brackets (grouping
symbol) |
|
 |
square root |
| { } |
Braces (grouping
symbol) |
|
 |
right angle |
| | | |
Absolute Value
Bars |
|
! |
factorial |
 |
is an element
of |
|
 |
the sum of |
 |
is not an
element of |
|
e |
numeric constant
2.71828 |
or  |
is a subset
of |
|
 |
line AB |
or  |
is not a subset |
|
 |
segment AB |
 |
the set of |
|
AB |
the length
of |
 |
the intersection
of |
|
 |
ray AB |