make right-angled
11Atomism — (from ancient Greek atomos, meaning uncuttable ) is a natural philosophy that developed in several ancient traditions. The atomists theorized that the natural world consists of two fundamental parts: indivisible atoms and empty void. According to …
12History of Western typography — Contemporary typographers view typography as craft with a very long history tracing its origins back to the first punches and dies used to make seals and currency in ancient times. The basic elements of typography are at least as old as… …
13triangle — n. 1) to draw, make a triangle 2) an acute; congruent; equilateral; isosceles; obtuse; right (AE), right angled (BE); scalene triangle 3) (fig.) the eternal triangle; a love triangle * * * [ traɪæŋg(ə)l] a love triangle congruent equilateral… …
14square — Synonyms and related words: Babbitt, Little Joe, Methuselah, Middle American, Philistine, T square, aboveboard, absolutely, accommodate, accord, accordant, account with, accurate, accurately, adapt, adipose, adjust, agora, agree, agree with,… …
15Pythagorean triple — A Pythagorean triple consists of three positive integers a , b , and c , such that a 2 + b 2 = c 2. Such a triple is commonly written ( a , b , c ), and a well known example is (3, 4, 5). If ( a , b , c ) is a Pythagorean triple, then so is ( ka …
16Descartes: methodology — Stephen Gaukroger INTRODUCTION The seventeenth century is often referred to as the century of the Scientific Revolution, a time of fundamental scientific change in which traditional theories were either replaced by new ones or radically… …
17Murderous Maths —   …
18List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have …
19The Seven Liberal Arts — The Seven Liberal Arts † Catholic Encyclopedia ► The Seven Liberal Arts The expression artes liberales, chiefly used during the Middle Ages, does not mean arts as we understand the word at this present day, but those branches of… …
20Pi — This article is about the number. For the Greek letter, see Pi (letter). For other uses, see Pi (disambiguation). The circumference of a ci …
