| 单词 | two-dimensional figure |
| 释义 | two-dimensional figure (once / 5909656 pages) n WORD FAMILY two-dimensional figure n a two-dimensional shape Syn|Hypo|Hyper plane figure heart a plane figure with rounded sides curving inward at the top and intersecting at the bottom; conventionally used on playing cards and valentines polygon, polygonal shapea closed plane figure bounded by straight sides conic, conic section(geometry) a curve generated by the intersection of a plane and a circular cone oblonga plane figure that deviates from a square or circle due to elongation hemicycle, semicirclea plane figure with the shape of half a circle sectora plane figure bounded by two radii and the included arc of a circle stara plane figure with 5 or more points; often used as an emblem paraboloida surface having parabolic sections parallel to a single coordinate axis and elliptic sections perpendicular to that axis ellipsoida surface whose plane sections are all ellipses or circles tree, tree diagrama figure that branches from a single root isogonan 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 ellipse, ovala closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it quadrangle, quadrilateral, tetragona four-sided polygon triangle, trigon, trilaterala three-sided polygon hexagrama regular polygon formed by extending each of the sides of a regular hexagon to form two equilateral triangles asterism(mineralogy) a star-shaped figure with six rays that is seen in some crystal structures under reflected or transmitted light pentacle, pentagram, pentanglea star with 5 points; formed by 5 straight lines between the vertices of a pentagon and enclosing another pentagon 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 parabolaa plane curve formed by the intersection of a right circular cone and a plane parallel to an element of the curve hyperbolaan open curve formed by a plane that cuts the base of a right circular cone cladograma tree diagram used to illustrate phylogenetic relationships stemmaa tree diagram showing a reconstruction of the transmission of manuscripts of a literary work figure a combination of points and lines and planes that form a visible palpable shape |
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