making+a+right+angle
81Thales — Infobox Philosopher color = #B0C4DE Thales image caption = Thales name = Thales of Miletos (Θαλής ο Μιλήσιος) birth = ca. 624–625 BC death = ca. 547–546 BC school tradition = Ionian Philosophy, Milesian school, Naturalism main interests = Ethics …
82Zhang Heng — For other uses, see Zhang Heng (disambiguation). This is a Chinese name; the family name is Zhang. Zhang Heng (張衡) Born …
83Eyeglass prescription — Using a phoropter to determine a prescription for eyeglasses An eyeglass prescription is an order written by an eyewear prescriber, such as an optometrist or ophthalmologist, that specifies the value of all parameters the prescriber has deemed… …
84Buildings of Jesus College, Oxford — Coordinates: 51°45′12.32″N 1°15′25.09″W / 51.7534222°N 1.2569694°W / 51.7534222; 1.2569694 …
85Wassily Kandinsky — Wassily Kandinsky, c. 1913 or earlier Birth name Wassily Wassilyevich Kandinsky Born 16 December [O.S. 4 December] 1866 Moscow …
86Plateosaurus — Unikonta Plateosaurus Temporal range: Triassic, 216–199 Ma …
87Su Song — 蘇頌 (Sū Sòng) Born 1020 near Quanzhou Died 1101 (aged 80–81) Nationality Chinese …
88Escalator — For the album by Sam Gopal, see Escalator (album). Escalators in a Copenhagen Metro station, Denmark, 2007 Escalator in action, 2011 An e …
89pregnancy — /preg neuhn see/, n., pl. pregnancies. the state, condition, or quality of being pregnant. [1520 30; PREGN(ANT) + ANCY] * * * Process of human gestation that takes place in the female s body as a fetus develops, from fertilization to birth (see… …
90Distributed element filter — Figure 1. A circuit featuring many of the f …
