base-centered packing
11Euclidean geometry — A Greek mathematician performing a geometric construction with a compass, from The School of Athens by Raphael. Euclidean geometry is a mathematical system attributed to the Alexandrian Greek mathematician Euclid, which he described in his… …
12History of video games — Part of a series on …
13History of molecular biology — The history of molecular biology begins in the 1930s with the convergence of various, previously distinct biological disciplines: biochemistry, genetics, microbiology, and virology. With the hope of understanding life at its most fundamental… …
14South Dakota — This article is about the U.S. state of South Dakota. For other uses, see South Dakota (disambiguation). State of South Dakota …
15Sunnyvale, California — Infobox Settlement official name = City of Sunnyvale, California other name = native name = nickname = settlement type = City motto = imagesize = image caption = flag size = image seal size = image shield = shield size = image blank emblem =… …
16Malfatti circles — In geometry, the Malfatti circles are three circles inside a given triangle such that each circle is tangent to the other two and to two sides of the triangle. They are named after Gian Francesco Malfatti, who made early studies of the problem of …
17Hydroxide — Lewis structure of the hydroxide ion showing three lone pairs on the oxygen atom …
18Tetrahedron — For the academic journal, see Tetrahedron (journal). Regular Tetrahedron (Click here for rotating model) Type Platonic solid Elements F = 4, E = 6 V = 4 (χ = 2) Faces by s …
19Israel's unilateral disengagement plan — Part of a series on the Israeli–Palestinian conflict and Arab–Israeli conflict Israeli–Palestinian peace process …
20Afghanistan — /af gan euh stan /, n. a republic in central Asia, NW of India and E of Iran. 23,738,085; 250,000 sq. mi. (647,500 sq. km). Cap.: Kabul. * * * Afghanistan Introduction Afghanistan Background: Afghanistan s recent history is characterized by war… …
