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octahedron
2-
dodecahedron
3-
icosahedron
4-
curvature
5-
parabola
6-
hyperbola
7-
torus
8-
crescent
9-
asymptote
10-
lattice
11-
oblong
octahedron
octahedron
noun
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a geometric figure with eight triangular faces, twelve edges, and six vertices

example
Example
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The faces of an octahedron are all equilateral triangles, and each vertex is the meeting point of four triangles.
The eight faces of an octahedron divide space into regions that are congruent to tetrahedra.
dodecahedron
dodecahedron
noun
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n
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a three-dimensional figure with twelve regular pentagonal faces, thirty edges, and twenty vertices

icosahedron
icosahedron
noun
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ə
s
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d
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n
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a three-dimensional figure with twenty equilateral triangle faces, thirty edges, and twelve vertices

curvature
noun
c
k
u
ɜ
r
r
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v
a
ə
t
ʧ
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r
e

the measure of how much a curve or surface deviates from being straight or flat at a specific point

parabola
parabola
noun
p
p
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r
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ə
l
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(geometry) a symmetrical open curve that is similar to the path of an object thrown into the air passes till it falls back to earth

hyperbola
noun
h
h
y
p
p
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ɜ
r
r
b
b
o
ə
l
l
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a geometric curve formed by the intersection of a plane with two cones, resulting in two symmetrical branches

torus
torus
noun
t
t
o
o:
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r
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ə
s
s

a solid shape resembling a donut or ring, made by spinning a circle around a line that does not cut through the circle

crescent
crescent
noun
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k
r
r
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ɛ
s
s
c
e
ə
n
n
t
t

a curved shape with narrow points at the ends that appears wider in the middle, like the shape of the moon in its first and last quarters

asymptote
noun
a
æ
s
s
y
ə
m
m
p
t
t
o
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t
e

a straight line that a curve approaches indefinitely but never intersects, characterizing the limiting behavior of the curve

lattice
noun
l
l
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æ
tt
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ə
c
s
e

a structure made of strips of wood, metal, or other rigid material arranged in a criss-crossed, grid-like pattern

oblong
oblong
noun
o
ɑ
b
b
l
l
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ɔ
n
n
g
g

a rectangular figure that has unequal adjacent sides with arched angles

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