, 2003: In ⊙ O, draw chord AB equal to r. Draw chord AC equal to Vt (which is the side of a regular decagon). CB is now one side of the regular pentadecagon. — Steven Atiyah, Essentials of Geometry (Trafford 2003, p. 357)
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pentadecagon — PENTADECAGÓN, pentadecagoane, s.n. (geom.) Poligon plan cu cincisprezece laturi şi cincisprezece unghiuri. – Din fr. pentadécagone. Trimis de cata, 21.03.2004. Sursa: DEX 98 PENTADECAGÓN s.n. Poligon plan cu cincisprezece laturi. [< fr.… … Dicționar Român
Pentadecagon — In geometry, a pentadecagon is any 15 sided, 15 angled, polygon. A regular pentadecagon has interior angles of 156°, and with a side length a , has an area given by: egin{align} A = frac{15}{4}a^2 cot frac{pi}{15} = frac{15a^2}{8} left(… … Wikipedia
pentadecagon — /pen teuh dek euh gon /, n. Geom. a polygon having 15 angles and 15 sides. [PENTA + DECAGON] * * * … Universalium
pentadecagon — pen·ta·dec·a·gon … English syllables
pentadecagon — n. 15 sided plane figure … Dictionary of difficult words
pentadecagon — ˌpentəˈdekəˌgän noun ( s) Etymology: pentadeca + gon : a polygon of 15 sides * * * /pen teuh dek euh gon /, n. Geom. a polygon having 15 angles and 15 sides. [PENTA + DECAGON] … Useful english dictionary
Polygon — For other uses, see Polygon (disambiguation). Some polygons of different kinds In geometry a polygon ( … Wikipedia
Двумерное пространство — У этого термина существуют и другие значения, см. 2D. У этого термина существуют и другие значения, см. Пространство. Двумерное пространство (иногда говорят двухмерное пространство) геометрическая модель плоской проекции физического мира, в… … Википедия
Quadrilateral — This article is about four sided mathematical shapes. For other uses, see Quadrilateral (disambiguation). Quadrilateral Six different types of quadrilaterals Edges and vertices 4 … Wikipedia
Triangle — This article is about the basic geometric shape. For other uses, see Triangle (disambiguation). Isosceles and Acute Triangle redirect here. For the trapezoid, see Isosceles trapezoid. For The Welcome to Paradox episode, see List of Welcome to… … Wikipedia
