alternation of form
61Uniform polytope — A uniform polytope is a vertex transitive polytope made from uniform polytope facets. A uniform polytope must also have only regular polygon faces.Uniformity is a generalization of the older category semiregular, but also includes the regular… …
62Evenness of zero — The number 0 is even. There are several ways to determine whether an integer is even or odd, all of which indicate that 0 is an even number: it is a multiple of 2, it is evenly divisible by 2, it is surrounded on both sides by odd integers, and… …
63Indo-European languages — Family of languages with the greatest number of speakers, spoken in most of Europe and areas of European settlement and in much of southwestern and southern Asia. They are descended from a single unrecorded language believed to have been spoken… …
64dance — dancingly, adv. /dans, dahns/, v., danced, dancing, n. v.i. 1. to move one s feet or body, or both, rhythmically in a pattern of steps, esp. to the accompaniment of music. 2. to leap, skip, etc., as from excitement or emotion; move nimbly or… …
65music, Western — Introduction history of Western music from ancient times to the present. All ancient civilizations entered historical times with a flourishing musical culture. That the earliest writers explained it in terms of legend and myth is… …
66nitrogen group element — ▪ chemical elements Introduction any of the chemical elements that constitute Group Va of the periodic table (see Figure >). The group consists of nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi). The elements share… …
67Western architecture — Introduction history of Western architecture from prehistoric Mediterranean cultures to the present. The history of Western architecture is marked by a series of new solutions to structural problems. During the period from the… …
68Old Chinese — Classic Chinese and Archaic Chinese redirect here. For the traditional style of written Chinese, see Classical Chinese. Old Chinese 上古漢語 …
69chamber music — music suited for performance in a room or a small concert hall, esp. for two or more, but usually fewer than ten, solo instruments. [1780 90] * * * Music composed for small instrumental ensembles and performed without a conductor. Traditionally… …
70Indo-Aryan languages — or Indic languages Major subgroup of the Indo Iranian branch of the Indo European language family. Indo Aryan languages are spoken by more than 800 million people, principally in India, Nepal, Pakistan, Bangladesh, and Sri Lanka. The Old Indo… …
