Meaning of Prefix Worksheets - DOC

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```					                                     Prefixes in Geometry
There are many new words you must know to be able to describe shapes and a solid luckily there is a
pattern to the way these words are used.

Meaning                     Prefix         Shape                Solid              Star

Three                  3    Tri            Triangle

Tetragon             Tetrahedron
Four                   4    Tetra                                                  Tetragram
(rarely used)
Five                   5    Penta          Pentagon             Pentahedron        Pentagram
Hexahedron
Cube
Six                    6    Hexa           Hexagon                                 Hexagram

Seven                  7    Hepta         Heptagon             Heptahedron        Heptagram
Octagon
Eight                  8    Octa                                Octahedron         Octagram

Nine                   9    Nona           Nonagon              Nonahedron         Nonagram

Ten                   10    Deca           Decagon              Decahedron         Decagram

Twelve                12    Dodeca         Dodecagon            Dodecahedron       Dodecagram

Twenty                20    Icosa          Icosagon             Icosahedron        Icosagram

One hundred         100     Hecto                                                  hectogram

Many                        Poly           Polygon              Polyhedron

Look at the table above. What do you think the suffix gon mean?

Look at the table above .What do you think the suffix hedron mean?

Why do you think there are two different prefixes for four?


Septa is often used for seven. Hepta is from the Greek and Septa from Latin)

Hannah Smith                                 Page 1                                2/02/2011
Geometry                                                                             Literacy
Using a Dictionary and the information on the front of this sheet to identify the number prefix and to
find the meanings of the following words:

Word                 Number     Meaning

biannual                2

biennial

bilingual

decilitre

decimate

hectopascal            100

hectostere

hexameter

hexapod

icosander

nonagenarian            90      A person in their Nineties. E.g. someone who is 92 years old.

nonagesimal

octave

octogenarian            80

Hannah Smith                                Page 2                              2 February 2011
Geometry                                                                                Literacy
Word             Number   Meaning

pentacle

pentathlon

septuagenarian

septuple

sextuple           6

sextuplet

tetralogy

tetrameter

triennial

trilogy

triplicate

Hannah Smith                        Page 3   2 February 2011
Geometry                                             Literacy
Some of our words
for numbers come from the Latin
language and some come from the Ancient
Greek language. The Ancient Greeks were very
interested in mathematics, particular in Geometry,
which is why most of our names for the shapes and
solids are derived from Ancient Greek words.

Greek              Latin              Meaning
Tetra              Quatra             4
Icosa              viginti            20
Hepta              Centum             100

The Latin word for 100 was Centum and the numeral
that the Roman’s used to represent 100 was a C.
Here are some examples of words that use the Latin
prefix Cent
Centenarian someone who is at least 100 years old
Centennial      occurring every 100 years
Centurion       a officer in the Roman Army who
commanded 100 men. (A unit of 100
men was called a Century.

Find two other English words that use the prefix Cent.

____________________ ______________________

Research:

Find out why September is the
ninth month of the year and not
the seventh month of the year
as its name suggests?

Write down the words on page 1 that come from Latin.
Hint: there are only two.

____________________________________________

Hannah Smith                        Page 4                              2 February 2011
Geometry                                                                        Literacy
2010
Geometry                                                                      Literacy

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