Symbols are
a **concise
way of giving
lengthy
instructions**
related to
numbers and
logic.

Symbols are
a communication
tool. Symbols
are used to
eliminate the
need to write
long, plain
language
instructions to
describe
calculations
and other
processes.

For example, a
single symbol
stands for the
entire process
for addition.
The familiar
plus sign
eliminates the
need for a long
written
explanation of
what addition
means and how
to accomplish
it.

The same
symbols are
used worldwide
. . .

The *symbols*
used in
mathematics are
*universal*.

The same math
symbols are
used throughout
the civilized
world. In most
cases each
symbol gives
the same clear,
precise meaning
to every
reader,
regardless of
the language
they speak.

The most
valuable,
**most
frequently used
Symbols** in
mathematics . .
.

The most
important, most
frequently used
*
Relation*
symbols are
listed
below.

Congruent
Symbol -

If two
geometric
objects have
exactly
the
same
shape
and the
same
size ,
they are
congruent
.

(If two
geometric
objects have
exactly the
same shape, but
not the same
size, they are
similar.
Click here to
view the
Similarity
Sign.
)

Example
1: ,

Figures A
and B have
the (1)
same shape
and the
(2) same
size.

Figure
"A"
is congruent
to
Figure
"B"

congruent

to
Figure
A
Figure
B

Figure
A
Figure
B

Figure
"A"
Figure
"B"

Example
2: ,

Figures C
and D have
the (1)
same shape
and the
(2) same
size.

Figure
"C"
is congruent
to
Figure
"D"

congruent

to
Figure
C
Figure
D

Figure
C
Figure
D

Figure
"C"
Figure
"D"

Example
3: ,

Triange
"ABC"
and
Triangle
"DEF"
have the
(1) same
shape and
the (2)
same size.

Triangle
"ABC"
is congruent
to
Triangle
"DEF"

congruent

to
A
B
C
D
E
F

A
B
C
D
E
F

Triangle
"ABC"
Triangle
"DEF"