Colors and Shapes - Three-Dimensional Shapes

Read this lesson to learn the names of some three-dimensional shapes in English, such as "cuboid", "sphere" and "cylinder".

review

flashcard

spelling

quiz

start-learning

solid [noun]

(geometry) a shape that is not two-dimensional because it has height, width, and length

Ex: Solids can be classified into different types such as prisms , pyramids , spheres , and cylinders based on their geometric properties .

cube [noun]

a three-dimensional figure made of six square or rectangular faces

Ex: The classroom had storage bins shaped like colorful cubes for organizing supplies .

cuboid [noun]

a three-dimensional geometric shape with six rectangular faces, resembling a box or a rectangular prism

spheroid [noun]

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

Ex: The Earth is not quite a sphere but is better described as an oblate spheroid flattened at the poles .

sphere [noun]

(in geometry) a three-dimensional surface where all points are equidistant from a center

Ex: Spheres are often used in design for their smooth and harmonious appearance .

cone [noun]

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

Ex:

cylinder [noun]

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

Ex: The artist sculpted a beautiful marble cylinder as part of a modern art installation .

ellipsoid [noun]

a three-dimensional shape similar to a stretched or compressed sphere

Ex: In geodesy , the reference ellipsoid is used as a mathematical model to represent the Earth 's shape .

hemisphere [noun]

either half of a sphere

Ex: They used a metal hemisphere to cover the delicate machinery .

polyhedron [noun]

a solid shape made of flat sides that fit together along their edges

Ex: The polyhedron 's vertices are the points where its edges meet .

trihedron [noun]

(geometry) a solid figure formed by three flat faces that intersect in a point

tetrahedron [noun]

(geometry) a polyhedron with four flat sides, a triangular pyramid

pentahedron [noun]

(geometry) a solid figure with five flat faces

Ex:

hexahedron [noun]

(geometry) a solid figure with six flat faces

heptahedron [noun]

a polyhedron with seven faces or sides

octahedron [noun]

a geometric figure with eight triangular faces, twelve edges, and six vertices

Ex: The vertices of an octahedron can be inscribed in a cube , forming a relationship between these two geometric shapes .

nonahedron [noun]

a shape with nine flat sides that connect along their edges

Ex: The architect used a nonahedron as the basis for the design of the new building .

decahedron [noun]

(geometry) a solid shape with ten flat faces

dodecahedron [noun]

a three-dimensional figure with twelve regular pentagonal faces, thirty edges, and twenty vertices

Ex: In geometry , the dodecahedron is associated with the number 12 , representing its twelve faces .

icosahedron [noun]

a three-dimensional figure with twenty equilateral triangle faces, thirty edges, and twelve vertices

Ex: The vertices of an icosahedron represent points where three edges meet , totaling twelve vertices .

toroidal polyhedron [noun]

a three-dimensional shape that wraps around a torus or doughnut-like surface

prism [noun]

(geometry) a solid figure with flat sides and two parallel ends of the same size and shape

oblique prism [noun]

a three-dimensional shape that has a pair of parallel bases connected by rectangular faces, with the bases not being perpendicular to the sides

right prism [noun]

a three-dimensional shape that has a pair of parallel bases connected by rectangular faces, with the bases being perpendicular to the sides

uniform prism [noun]

a three-dimensional shape that has two identical bases, and all sides are the same shape and size

triangular prism [noun]

a three-dimensional shape with two triangular bases connected by three rectangular faces

Ex: The packaging box had the shape of a triangular prism , making it easy to stack .

square prism [noun]

a type of uniform prism that has square bases and rectangular faces that connect the bases

pentagonal prism [noun]

a type of uniform prism that has pentagonal bases and rectangular faces that connect the bases

hexagonal prism [noun]

a type of uniform prism that has hexagonal bases and rectangular faces that connect the bases

rhombohedron [noun]

a three-dimensional geometric figure with six identical rhombus-shaped faces

Ex: The shape of some beach pebbles resembles a rhombohedron .

parallelepiped [noun]

a three-dimensional figure with six parallelogram faces, where each face is parallel to the opposite face

Ex: Ice cubes in a tray naturally form parallelepipeds when frozen .

hyperboloid [noun]

a three-dimensional shape often seen in cooling towers, sculptures, or lampshades, known for its curved design

Ex: Artistic sculptures may incorporate the graceful curves of a hyperboloid .

platonic solid [noun]

a 3D shape with identical, regular polygon faces and the same number of faces meeting at each corner

Ex: Plato linked each platonic solid to classical elements like earth , air , fire , water , and the cosmos .

star polyhedron [noun]

a three-dimensional geometric shape composed of multiple intersecting polygons that form a star-like structure

Kepler-Poinsot polyhedron [noun]

a type of regular polyhedron in geometry, which is formed by extending the faces of a regular convex polyhedron to create new faces or facets

Szilassi polyhedron [noun]

a non-convex polyhedron in geometry that has an unusual property of having no faces that are triangles, despite being composed of triangular faces

Csaszar polyhedron [noun]

a three-dimensional shape made up of 14 faces, 21 vertices, and 36 edges, with a symmetrical arrangement of polygons

uniform polyhedron [noun]

a convex polyhedron in geometry that has regular polygons as its faces and is vertex-transitive

Archimedean solid [noun]

a semi-regular convex polyhedron in geometry that has a combination of regular polygons as its faces, with identical vertices and edges, and is vertex-transitive

snub dodecahedron [noun]

a non-convex Archimedean solid with icosahedral symmetry, consisting of 80 equilateral triangles and 12 regular pentagons

pyramid [noun]

a solid with a polygonal base and triangular faces that meet at a single point

Ex: They studied the properties of a pyramid in geometry class , focusing on its volume and surface area .

triangular-based pyramid [noun]

a three-dimensional geometric shape with a triangular base and triangular faces that meet at a common vertex or apex point

square pyramid [noun]

a three-dimensional geometric shape with a square base and four triangular faces that meet at a common vertex or apex point

pentagonal pyramid [noun]

a three-dimensional geometric shape with a pentagonal base and five triangular faces that meet at a common vertex or apex point

stellated dodecahedron [noun]

a three-dimensional geometric shape formed by extending the faces of a regular dodecahedron to create additional triangular faces or spikes

torus [noun]

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

Ex:

hexagonal pyramid [noun]

a three-dimensional geometric shape with a hexagonal base and triangular faces that meet at a common vertex

heptagonal pyramid [noun]

a three-dimensional geometric shape with a heptagonal base and triangular faces that meet at a common vertex

octagonal pyramid [noun]

a geometric shape consisting of an octagonal base and triangular faces that converge to a single point or vertex at the top

Colors and Shapes
Shades of Black	Shades of Blue	Shades of Azure	Shades of Cyan
Shades of Gray	Shades of Dark Brown	Shades of Light Brown	Shades of Dark Green
Shades of Light Green	Shades of Magenta	Shades of Orange	Shades of White
Shades of Yellow	Shades of Pink	Shades of Red	Shades of Purple
Words Related to Colors	Two-Dimensional Shapes	Three-Dimensional Shapes	Polygons
Lines, Angles, and Curves	Words Related to Shapes