Definition of pentahedron in English:

pentahedron

nounPlural pentahedrons, Plural pentahedra ˌpɛntəˈhiːdr(ə)nˌpɛn(t)əˈhidrən

A solid figure with five plane faces.
五面体
Example sentencesExamples
- Whereas the tetrahedron is composed of four triangles, the pyramid (or pentahedron), which looks a lot like it, is composed of four triangles and a square - the base.
- Then the pyramids are cut by silhouettes into a set of pentahedrons, which together constitute the centripetal pentahedron model of the visual hull.
- You can also have an Egyptian pentahedron square-base pyramid.

Derivatives

pentahedral

adjective

There are two topologically distinct pentahedral graphs which, through duality, correspond to the skeletons of the square pyramid and triangular dipyramid.
Example sentencesExamples
- I noticed that it was closely related to the pentahedral prism packing.

Origin

Late 18th century: from penta- 'five' + -hedron, on the pattern of words such as polyhedron.

Definition of pentahedron in US English:

pentahedron

nounˌpɛn(t)əˈhidrənˌpen(t)əˈhēdrən

A solid figure with five plane faces.
五面体
Example sentencesExamples
- Then the pyramids are cut by silhouettes into a set of pentahedrons, which together constitute the centripetal pentahedron model of the visual hull.
- You can also have an Egyptian pentahedron square-base pyramid.
- Whereas the tetrahedron is composed of four triangles, the pyramid (or pentahedron), which looks a lot like it, is composed of four triangles and a square - the base.

Origin

Late 18th century: from penta- ‘five’ + -hedron, on the pattern of words such as polyhedron.

词汇	pentahedron
释义	Definition of pentahedron in English: pentahedron nounPlural pentahedrons, Plural pentahedra ˌpɛntəˈhiːdr(ə)nˌpɛn(t)əˈhidrən A solid figure with five plane faces. 五面体 Example sentencesExamples Whereas the tetrahedron is composed of four triangles, the pyramid (or pentahedron), which looks a lot like it, is composed of four triangles and a square - the base. Then the pyramids are cut by silhouettes into a set of pentahedrons, which together constitute the centripetal pentahedron model of the visual hull. You can also have an Egyptian pentahedron square-base pyramid. Derivatives pentahedral adjective There are two topologically distinct pentahedral graphs which, through duality, correspond to the skeletons of the square pyramid and triangular dipyramid. Example sentencesExamples I noticed that it was closely related to the pentahedral prism packing. Origin Late 18th century: from penta- 'five' + -hedron, on the pattern of words such as polyhedron. Definition of pentahedron in US English: pentahedron nounˌpɛn(t)əˈhidrənˌpen(t)əˈhēdrən A solid figure with five plane faces. 五面体 Example sentencesExamples Then the pyramids are cut by silhouettes into a set of pentahedrons, which together constitute the centripetal pentahedron model of the visual hull. You can also have an Egyptian pentahedron square-base pyramid. Whereas the tetrahedron is composed of four triangles, the pyramid (or pentahedron), which looks a lot like it, is composed of four triangles and a square - the base. Origin Late 18th century: from penta- ‘five’ + -hedron, on the pattern of words such as polyhedron.
随便看	playing card playing cards playing field playing fields playing hand playing hookey playing host to playingly playing one's cards close to one's chest playing partner playing-place playings playing someone up playing table playing the field playing the wag playing trick playing truant play into hands play into sb's hands play into somebody's hands play into someone's hands play into someone's hands play it by ear play it by the book