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Shape Names - Polygons and Platonic Solids

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Names from wikipedia
Quiz by
scambigol
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Last updated: April 29, 2025
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First submittedAugust 9, 2014
Times taken258
Average score46.4%
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EDGES
POLYGON
3
triangle (or trigon)
4
quadrilateral (or quadrangle or tetragon)
5
pentagon
6
hexagon
7
heptagon
8
octagon
9
enneagon or nonagon
10
decagon
11
hendecagon (or undecagon)
12
dodecagon
13
tridecagon (or triskaidecagon)
14
tetradecagon (or tetrakaidecagon)
EDGES
POLYGON
15
pentadecagon (or pentakaidecagon)
16
hexadecagon (or hexakaidecagon)
17
heptadecagon (or heptakaidecagon)
18
octadecagon (or octakaidecagon)
19
enneadecagon (or enneakaidecagon)
20
icosagon
30
triacontagon
100
hectogon
1000
chiliagon
10,000
myriagon
1,000,000
megagon
FACES
PLATONIC SOLID
4
TETRAHEDRON
6
CUBE (hexahedron)
8
OCTAHEDRON
12
DODECAHEDRON
20
ICOSAHEDRON
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3 Comments
calcguy
+1
Level 41
Apr 28, 2025
The Platonic solids do not have that many vertices, they have that many faces. Also, the cube has 6 faces not 8, the octahedron has 8 faces not 6, the icosagon has 20 faces not 12 and the dodecagon has 12 faces not 20.

The cube is also known as a hexahedron.

and an 11-gon is also known as an undecagon.

These should be accepted as alternate responses.

scambigol
+1
Level 80
Apr 29, 2025
should be all fixed now, thanks a lot!
Ampersandwich
+1
Level 60
Apr 29, 2025
Really? A chiliagon! Wonder how that tastes like ;)
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