English Nouns Related to "Shapes"

circle

noun

c

s

i

ɜ

r

c

k

l

ə

e

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a completely round, plain shape

Example

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She used a compass to draw a small circle on the map.

The children drew a circle on the paper during art class.

square

noun

s

q

k

u

w

a

ɛ

r

e

a shape with four equal straight sides and four right angles, each measuring 90°

triangle

noun

t

r

ia

aɪæ

n

g

ə

l

e

(geometry) a flat shape consisting of three straight sides and three angles

rectangle

noun

r

e

ɛ

c

k

t

a

æ

n

g

ə

l

e

(geometry) a flat shape with four right angles, especially one with opposing sides that are equal and parallel to each other

oval

noun

o

oʊ

v

a

ə

l

a shape that is wide in the middle and narrow at both ends

diamond

noun

d

ia

aɪ

m

o

ə

n

d

a shape with four equal, sloping straight sides, forming a point at the top and another at the bottom

star

noun

s

t

a

ɑ

r

a shape with five or more points, representing a star in the sky

sphere

noun

s

ph

f

e

ɪ

r

e

(geometry) a round object that every point on its surface has the same distance from its center

cube

noun

c

k

u

ju

b

e

a figure, either hollow or solid, with six equal square sides

cylinder

noun

c

s

y

ɪ

l

i

ə

n

d

e

ɜ

r

(geometry) a solid or hollow shape with two circular bases at each end and straight parallel sides

cone

noun

c

k

o

oʊ

n

e

(geometry) a three dimensional shape with a circular base that rises to a single point

pyramid

noun

p

y

ɪ

r

a

ə

m

i

ɪ

d

a solid object with a square base and four triangular sides joined to a point on the top

hemisphere

noun

h

e

ɛ

m

i

ɪ

s

ph

f

e

ɪ

r

e

either half of a sphere

crescent

noun

c

k

r

e

ɛ

s

c

e

ə

n

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

cross

noun

c

k

r

o

ɑ:

ss

s

a mark or an object formed by two short lines or pieces crossing each other

spiral

noun

s

p

i

aɪ

r

a

ə

l

(geometry) a curved shape or design that gradually winds around a center or axis

spheroid

noun

s

ph

f

e

ɪ

r

oi

ɔɪ

d

(geometry) a round 3D shape like a ball that is slightly flattened at the top and bottom points

semicircle

noun

s

e

ɛ

m

i

c

s

i

ɜ:

r

c

k

ə

l

e

any half of a circle

pentagon

noun

p

e

ɛ

n

t

a

ɪ

g

o

ɑ

n

a geometric shape with five angles and five straight sides

hexagon

noun

h

e

ɛ

x

ks

a

ə

g

o

ɑ

n

(geometry) a closed shape with six straight sides and six angles

heptagon

noun

h

e

ɛ

p

t

a

ə

g

o

ɑ:

n

a seven-sided plane shape consisting of seven line segments or edges that meet at seven interior angles

octagon

noun

o

ɑ

c

k

t

a

ə

g

o

ɑ

n

(geometry) a polygon consisting of eight straight sides and eight angles

decagon

noun

d

e

i

c

k

a

æ

g

o

ɑ:

n

(geometry) a flat polygon with ten straight sides and ten angles

pentagram

noun

p

e

ɛ

n

t

a

g

r

a

æ

m

a five-pointed star

oblong

noun

o

ɑ

b

l

o

ɔ

n

g

a rectangular figure that has unequal adjacent sides with arched angles

torus

noun

t

o

o:

r

u

ə

s

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

curve

noun

c

k

u

ɜ

r

v

e

a line or shape that is not straight and bends gradually

straight line

parallel

noun

p

a

ɛ

r

a

ə

ll

l

e

ɛ

l

a pair of geometric figures, such as lines or planes, that do not meet or intersect, no matter how far they are extended

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