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Polygon Presentation
By: Elaine Hersh, Anna Oleszczuk, and
Sarah Meder
tables found on wikepedia under
polygons
Resource PagePolygon names
Name Sides
triangle (or trigon) 3
quadrilateral (or tetragon) 4
pentagon 5
hexagon 6
heptagon (avoid "septagon") 7
octagon 8
enneagon (or "nonagon") 9
decagon 10
Resource Page
hendecagon (avoid "undecagon") 11
dodecagon (avoid "duodecagon") 12
triskaidecagon 13
pentadecagon 15
heptadecagon 17
enneadecagon 19
icosagon 20
triacontagon 30
pentacontagon 50
hectagon (avoid "centagon") 100
chiliagon 1000
myriagon 10,000
Resource PageTens
and Ones final prefix
-kai-
1 hena-
-gon
20 icosi- 2 -di-
30 triaconta- 3 -tri-
40 tetraconta- 4 -tetra-
50 pentaconta- 5 -penta-
60 hexaconta- 6 -hexa-
70 heptaconta- 7 -hepta-
80 octaconta- 8 -octa-
90 enneaconta- 9 -ennea-
That is, a 42-sided figure would be named as follows:
Tensand Ones
final prefix
full polygon name
tetraconta- -kai- -di- -gon tetracontakaidigonand a 50-sided figure
Tensand Ones
final prefi
xfull polygon name
pentaconta- -gon pentacontagon
Types of Polygons
Regular PolygonsTriangles
QuadrilateralsPentagonsHexagonsOctagonsDecagons
Regular Polygons
• All of the sides and the angles are congruent
Triangles
• Three sided polygons
Quadrilaterals
• Four sided polygons
Pentagons
• Five sided polygons
Hexagons
• Six sided polygons
Octagons
• Eight sided polygons
Decagons
• Ten sided polygons
Name the following polygons.
1
2 3
• 1 – HEXAGON
• 2 – QUADRILATERAL• RECTANGLE
• 3 - DECAGON
Name the following polygons.
1
2
3
• 1 – Octagon
• 2 – Pentagon
• 3 – Scalene Triangle
What polygons can you find…
• In your classroom?
• On the playground?
• In your own home?