Wikipedia English | Category 1 | Page 121
Closed polygonal chain
In geometry, a polygonal chain is a connected series of line segments. More formally, a polygonal chain P{\displaystyle P} is a curve specified by a sequence of points (A1,A2,…,An){\displaystyle
Yemen
Yemen, officially the Republic of Yemen, is a country in West Asia. Located in southern Arabia, it borders Saudi Arabia to the north, Oman to the northeast, the Red Sea to the west, the Gulf of Ade
Caninae
Caninae (whose members are known as canines (/k eɪ n aɪ n z / ): 182 is the only living subfamily within Canidae, alongside the extinct Borophaginae and Hesperocyoninae. They first appeared in Nort
Gregor Mendel
Gregor Johann Mendel OSA (/ˈ m ɛ n d əl / ; Czech: Řehoř Jan Mendel; 20 July 1822 – 6 January 1884) was an Austrian biologist, meteorologist, mathematician, Augustinian friar and abbot of St. Thoma
Mail
The mail or post is a system for physically transporting postcards, letters, and parcels. A postal service can be private or public, though many governments place restrictions on private systems. S
Biologically immortal
Biological immortality (sometimes referred to as bio-indefinite mortality) is a state in which the rate of mortality from senescence (or aging) is stable or decreasing, thus decoupling it from chro
Immutable object
In object-oriented (OO) and functional programming, an immutable object (unchangeable object) is an object whose state cannot be modified after it is created. This is in contrast to a mutable objec
Period (mathematics)
A periodic function, also called a periodic waveform (or simply periodic wave), is a function that repeats its values at regular intervals or periods. The repeatable part of the function or wavefor
Constitution of Italy
The Constitution of the Italian Republic (Italian: Costituzione della Repubblica Italiana) was ratified on 22 December 1947 by the Constituent Assembly, with 453 votes in favour and 62 against, bef
Sailing ship
A sailing ship is a sea-going vessel that uses sails mounted on masts to harness the power of wind and propel the vessel. There is a variety of sail plans that propel sailing ships, employing squar