| 单词 | polygon |
| 释义 | polygon (once / 10111 pages) n A polygon is a closed shape with straight sides. Rectangles, triangles, hexagons, and octagons are all examples of polygons. The word polygon comes from the Greeks, like most terms in geometry, which they invented. It simply means many (poly) angles (gon). A polygon can’t have any curves or any gaps or openings in its shape. If you want to describe something as angular and closed, like, say, the Pentagon, or a stop sign, you could call it "polygonal." WORD FAMILYpolygon: polygonal, polygons+/polygonal: polygonally USAGE EXAMPLESIts sister sites on the media network - including popular special interest sites Deadspin, Polygon and Jezebel - were acquired by Univision, and continue to operate. BBC(Nov 02, 2016) And then you watch them roll around under a thin sheet, and blush furiously, imagining that one of the lumps of polygons is you. The Guardian(Oct 04, 2016) Timothy Makepeace may have gazed across the river for “Pentagon Hub,” an elegant charcoal drawing of a seemingly imaginary machine centered on a familiar polygon. Washington Post(Aug 26, 2016) n a closed plane figure bounded by straight sides Syn|Hypo|Hyper polygonal shape isogon an equiangular polygon convex polygona polygon such that no side extended cuts any other side or vertex; it can be cut by a straight line in at most two points concave polygona polygon such that there is a straight line that cuts it in four or more points quadrangle, quadrilateral, tetragona four-sided polygon triangle, trigon, trilaterala three-sided polygon pentagona five-sided polygon hexagona six-sided polygon heptagona seven-sided polygon octagonan eight-sided polygon nonagona nine-sided polygon decagona polygon with 10 sides and 10 angles undecagonan eleven-sided polygon dodecagona twelve-sided polygon spherical polygona figure on the surface of a sphere bounded by arcs of 3 or more great circles reentering polygon, reentrant polygona polygon with one or more reentrant angles regular polygona polygon with all sides and all angles equal acute triangle, acute-angled trianglea triangle whose interior angles are all acute equiangular triangle, equilateral trianglea three-sided regular polygon isosceles trianglea triangle with two equal sides oblique trianglea triangle that contains no right angle obtuse triangle, obtuse-angled trianglea triangle that contains an obtuse interior angle right triangle, right-angled trianglea triangle with one right angle scalene trianglea triangle with no two sides of equal length parallelograma quadrilateral whose opposite sides are both parallel and equal in length trapeziuma quadrilateral with no parallel sides trapezoida quadrilateral with two parallel sides regular hexagona hexagon with six sides of equal length spherical trianglea spherical polygon formed by the arcs of 3 great circles cuneus, wedge, wedge shapeany shape that is triangular in cross section plane figure, two-dimensional figure a two-dimensional shape |
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