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In geometry a quadrilateral is a four-sided polygon, having four edges (sides) and four corners (vertices). The word is derived from the Latin words quadri, a variant of four, and latus, meaning "side".
Saccheri quadrilaterals. A Saccheri quadrilateral is a quadrilateral with two equal sides perpendicular to the base.It is named after Giovanni Gerolamo Saccheri, who used it extensively in his 1733 book Euclides ab omni naevo vindicatus (Euclid freed of every flaw), an attempt to prove the parallel postulate using the method reductio ad absurdum.
Translations of three jewels; English: three jewels, three treasures, triple gem: Sanskrit: त्रिरत्न, रत्नत्रय (IAST: triratna, ratna ...
Vietnamese poetry originated in the form of folk poetry and proverbs. Vietnamese poetic structures include Lục bát, Song thất lục bát, and various styles shared with Classical Chinese poetry forms, such as are found in Tang poetry; examples include verse forms with "seven syllables each line for eight lines," "seven syllables each line for four lines" (a type of quatrain), and "five ...
Basis of trigonometry: if two right triangles have equal acute angles, they are similar, so their corresponding side lengths are proportional.. In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) [1] are real functions which relate an angle of a right-angled triangle to ratios of two side lengths.
The áo tứ thân was the dress of peasant women, which explains why it was often made with plain fabric in dark colors, except when it was to be worn at special occasions such as festivals or weddings. Regardless of its many different forms, the basic áo tứ thân consists of: A flowing outer tunic, reaching almost to the floor.
After the first concert, she continued to hold another Tinh Nghe Si 2 with the attendance of Dam Vinh Hung, Uyen Linh, Duong Trieu Vu, Hien Thuc, Quang Linh, Giang Hong Ngoc, Gia Bao Comedy Group and raised 310 million VND [212] [213] which later was handed to Hoa My Hanh (40 million VND), the rest was divided to help Tran Dinh Duy, Quach Gia ...