1. Wordskills Lesson 4

2. Proto (first) typ (model)
one
Greek
Mono
Monocle
Mono (one) ocul (eye)
Proto
Prototype
Proto (first) typ (model)
Latin
Uni
Unify
Uni (one) fy (make)

3. Di (two) cephal (head) ous (full of)
Greek Di
Dicephalous
Di (two) cephal (head) ous (full of)
Latin
Du (duo)
Duet
Du (two) et (small)
Duplex
Du (two) plex (strike)

4. (tri (three) ply (fold) Tri (three) plex (strike)
Greek
Tri
Triple
(tri (three) ply (fold)
Latin
Tri
Triplex
Tri (three) plex (strike)

5. Tretra (four) hedron (faces) Latin Quadr (quart) Quadrilateral
Greek
Tetra
Tetrahedron
Tretra (four) hedron (faces)
Latin
Quadr (quart)
Quadrilateral
Quadr (four) later (side)
Quarter (quart (four) – one four

6. Penta (five) gon (side, angle) Quint (five) et (small)
Greek
Penta
Pentagon
Penta (five) gon (side, angle)
Latin
Quint
Quintet
Quint (five) et (small)

7. Sex (one sixth of a circle) Hexa (six) gon (side, angle)
Latin
Sex (ses)
Sextant
Sex (one sixth of a circle)
A sextant is a navigational instrument for measuring altitude and is graduated into sixths of a circle.
Greek
Hexa
Hexagon
Hexa (six) gon (side, angle)

8. Hepta (seven) arch (rule)
Greek
Hepta
Heptarchy
Hepta (seven) arch (rule)
Latin
Septa
September
Septe (seven)
In the original calendar – September was the seventh month.

9. Octa (eigth) gon (angle) Octa (eight) hedron (face)
Greek
Octa
Octagon
Octa (eigth) gon (angle)
Latin
Octa (octo)
Octahedron
Octa (eight) hedron (face)
October

10. Ennea (nine) gon (angle) Nona (nine) gen (born) ian (one who)
Greek
Ennea
Ennead
Ennea (group of nine)
Enneagon
Ennea (nine) gon (angle)
Latin
Nona (novem)
Nonagenarian
Nona (nine) gen (born) ian (one who)
*it means someone who is in his/her 90’s
November

11. (dec) ten) athlon (contest)
Latin
Dec
Decimal
Dec (tenth)
Decimate
Dec (one tenth)
*derives from the Roman soldiers’ practice of killing one of every ten of the enemy
December
Greek
Dec
Decade
Dec (ten)
Decathlon
(dec) ten) athlon (contest)

12. Duodec (twelve fingers)
Latin
Duodec
Duodecimal
duodec (one twelveth)
Duodenum
Duodec (twelve fingers)
*the small intestine – named because it was “twelve fingers” long
Greek

13. Hecto (100) metr (measure)
hundred
Greek
Hect
Hectometer
Hecto (100) metr (measure)
Latin
Cent
Century
Cent (hundred)

14. Mill (thousand) metr (measure)
Greek
Kilo
Kilometer
Kilo (1000) metr (measure)
*means on thousand meters
Latin
Mill
Millimeter
Mill (thousand) metr (measure)
* means 1/1000 of a meter

15. billion
Greek
Nano
Nanogram
one billionth of a gram
Latin