|
|
positive, plus, add
|
|
|
angle
|
|
|
negative, minus, subtract
|
|
|
perpendicular
|
×
|
times, multiply
|
|
|
degree(s)
|
÷
|
divide
|
|
|
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
|
|
|
is a subset of
|
|
|
line AB
|
|
|
is not a subset
|
|
|
segment AB
|
|
|
the set of
|
|
AB
|
the length of
|
|
 |
|
|
|
|
|
|
|
the intersection
|
|
|
ray AB
|
|
