What's the difference between octagon and polygon?

Octagon


Definition:

  • (n.) A plane figure of eight sides and eight angles.
  • (n.) Any structure (as a fortification) or place with eight sides or angles.

Example Sentences:

  • (1) Comprised of four octagonal half strain rings, the strain gage dynamometer measures the three moment load components at the boot.
  • (2) Holding it with both hands they howl into the octagon.
  • (3) On a platform level with the octagonal cage in which the fighters would assault each other, was a row of gilded sofas, scattered with red cushions, which still lacked occupants.
  • (4) Outside of the octagon, Bisping possesses the demeanour of an oversized Ricky Hatton - all mischievous grins, wisecracks and gentle ribbing of his sparring partners.
  • (5) At the divisional courthouse, a palatial complex of octagonal towers and Florentine domes originally built as the accounting office of British Burma, the windows have blown out and vegetation sprouts from every nook, yet inside the decaying shell, the courts continue to press on.
  • (6) Three groups of rats were required to locate a single water bottle from an octagonal array of eight otherwise empty bottles.
  • (7) The task in the 8-choice arena was to locate a single water bottle from an octagonal array of eight otherwise empty bottles.
  • (8) Modest in size, the Casa de Mar makes for a cool, peaceful perch from which to look out onto the octagonal bell tower and beyond to the aptly named Golfo Paradiso.
  • (9) At a special meeting convened at Bear's 45-floor octagonal midtown office tower, investors nodded through a sale of the cash-strapped company to its rival JP Morgan at a knockdown price of about $1.4bn (£700m).
  • (10) Because, Fertitta says, here’s the thing: “What we have is this incredible thing where you take two athletes, at the top of their game, in the most incredible shape and you put them in the Octagon and you let them use any martial art they want to compete.
  • (11) Whereas segments of hexagonal rods in the section should project as octagons at the electron microscope imaging plane, and octagonal profiles are never found, rectangular or rhombohedral rod segments project as hexagons.
  • (12) Remove the peel from each slice by cutting around the fruit in straight lines to make hexagonal or octagonal slices.
  • (13) There are remnants of what was once a temple at Nettleton Shrub in Wiltshire – a large octagonal building perhaps in honour of Apollo.
  • (14) Outside the Octagon, Zuffa doesn’t just regulate, it overregulates.
  • (15) The following images were seen: 1) elongated hexagons with sharp outlines, maximal density, and minimal size (type A profile); 2) elongated hexagons with one pair of long sides of high contrast, two pairs of short sides of low contrast, high density in the center of the image, and low density towards the low contrast sides (type B profile); 3) slanted hexagons with one pair of high contrast sides, two pairs of low contrast sides (one pair of long, one pair of short sides), and the density decreasing from the center towards the low contrast sides (type C profile); this profile was seen more frequently than the type B profile; and 4) octagons with low contrast edges all around, the density decreasing from the center towards the edges (type D profile).
  • (16) The dendritic apex is octagonally shaped in transverse section, its inner membrane lined by a laminated structure reminiscent of the noctuoid tympanal organ 'collar'.
  • (17) Before it started, the security guards closed in around the Octagon.
  • (18) These optimal conditions have been confirmed with an octagonal design experiment.
  • (19) Contraindications are cases of wide apical foramina and oval or octagonal root canal cross sections.
  • (20) Together with a gilded octagonal ceiling painting by the Baroque master Domenichino , they give the basilica a memorable glow.

Polygon


Definition:

  • (n.) A plane figure having many angles, and consequently many sides; esp., one whose perimeter consists of more than four sides; any figure having many angles.

Example Sentences:

  • (1) Gap junctions were of different sizes and frequently composed of a small number of connexons organized in polygonal aggregates or linear arrays.
  • (2) The isolated outer sheath was observed as a triple-layered, closed vesicle carrying a polygonal array by electron microscopy.
  • (3) Electron microscopically, the tumor cell nuclei were oval or polygonal and sometimes slightly invaginated, with a few prominent nucleoli.
  • (4) Delimitation of the pathological process in the lung is characterized by an increase in the number of T- and B-lymphocytes and considerable predominance of polygonally shaped cells with cytoplasmic outgrowths of different lengths and their subsequent replacement by a cell form transitory between T- and B-lymphocytes.
  • (5) At day 12-15, some nodules consisting of polygonal cells were formed in all culture conditions, and these nodules were mineralized 2-3 days later.
  • (6) The majority of the choline acetyltransferase-immunoreactive neurons had fusiform, oval, or polygonal somata with somatic diameters greater than 20 microns and contained deeply invaginated nuclei surrounded by copious cytoplasm.
  • (7) One type of cells had polygonal morphology, showed density-dependent contact inhibition at confluence in vitro, showed lectin-binding characteristics of endothelium (but only moderate positivity for factor VIII antigen), demonstrated induction of gamma-glutamyl transpeptidase when exposed to astrocyte-conditioned media, and responded to insulin by a pronounced increase in DNA synthesis.
  • (8) The first type included large multipolar neurons with triangular or polygonal perikarya and typically 3-5 dendrites emerging from the poles of each cell.
  • (9) Type II neurons had multipolar or polygonal cell bodies, which measured an average 31 micrometer by 43 micrometer and emitted four to seven primary dendrites.
  • (10) "En face" views of the epithelial cells showed capping protein distributed in a polygonal pattern coincident with cell boundaries in intestinal epithelium, sensory epithelium of the cochlea, and the pigmented epithelium of the retina and at regions of cell-cell contact between chick embryo kidney cells in culture.
  • (11) Polygonal, foamy macrophages were found in 12 cases.
  • (12) The subcultured HNC and ADPKD cells retained characteristic epithelial polygonal and elongated shape and positive immunofluorescent staining for cytokeratin.
  • (13) The slightly prominent apices of the superficial epithelial cells are more or less polygonal in shape and covered with short microvilli among which small granules as possible morphological expression of a secretory activity are detectable.
  • (14) Initially, they grew as individual polygonal cells, tending to form tight confluent monolayers with poorly defined intercellular boundaries.
  • (15) A 3rd type displayed a polygonal outline and increased cytoplasm.
  • (16) While the arteries show a long stretched spinle or lancet like form they change over blunt, oval, triangular or rhomboid forms into polygonal cells with spiked border lines at the venules.
  • (17) Also PMA was found to cause a profound change in astrocyte morphology; cells were converted from flat, polygonal, undifferentiated cells to process-bearing cells.
  • (18) On these substrata, cultured astrocytes changed their shape from flat and polygonal to stellate in the absence of hormones or growth factor supplements.
  • (19) The cells have a spindle, round or polygonal shape with neoplastic and pleomorphic features that grew in multilayers without contact inhibition.
  • (20) The rate constant for clearance as described in the paper represents a non-invasive method for rapid evaluation of the uptake capacity of the liver and, in particular, with regard to the polygonal cells of the liver parenchyma when IDA derivatives are employed.

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