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The first known trigonometric table, compiled by Hipparchus in the 2nd century BC, is no longer extant but tabulated the value of the chord function for every 7 + 1 / 2 degrees. In the 2nd century AD, Ptolemy compiled a more extensive table of chords in his book on astronomy , giving the value of the chord for angles ranging from 1 / ...
[3] [4] It also means that the number of integer triangles with even numbered perimeters = is the same as the number of integer triangles with odd numbered perimeters = Thus there is no integer triangle with perimeter 1, 2 or 4, one with perimeter 3, 5, 6 or 8, and two with perimeter 7 or 10.
In geometry, a heptagon or septagon is a seven-sided polygon or 7-gon.. The heptagon is sometimes referred to as the septagon, using "sept-" (an elision of septua-, a Latin-derived numerical prefix, rather than hepta-, a Greek-derived numerical prefix; both are cognate) together with the Greek suffix "-agon" meaning angle.
A tangential quadrilateral is usually defined as a convex quadrilateral for which all four sides are tangent to the same inscribed circle.Pitot's theorem states that, for these quadrilaterals, the two sums of lengths of opposite sides are the same.
Four-sided dice were among the gambling and divination tools used by early man who carved them from nuts, wood, stone, ivory and bone. [2] Six-sided dice were invented later but four-sided dice continued to be popular in Russia.
The nabla is a triangular symbol resembling an inverted Greek delta: [1] or ∇. The name comes, by reason of the symbol's shape, from the Hellenistic Greek word νάβλα for a Phoenician harp, [2] [3] and was suggested by the encyclopedist William Robertson Smith in an 1870 letter to Peter Guthrie Tait.
Kajang Dispersal Link Expressway, SILK, also known as Kajang SILK Highway Kajang Dispersal Link Expressway (Malay: Sistem Lingkaran-Lebuhraya Kajang), is an expressway built to disperse and regulate the traffic flow in Kajang, Selangor, Malaysia. The 37 km (23 mi) expressway is to allow motorists to bypass the town centre of Kajang.
Lingkaran Tengah Utama Expressway, previously known as Central Spine Road (CSR) or Kuala Krai–Kuala Pilah Highway, Federal Route 34, is a new toll-free expressway under construction in the center of Peninsular Malaysia.