An Encyclopaedia of Architecture, Historical, Theoretical, and PracticalLongmans, Green, 1876 - 1395 pages |
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Page 271
... circle . G Let the circle of which it is required to find the centre be AGBF . Draw any chord AB ( fig . 267. ) ; bisect it , and from the point of divi- sion D raise a perpendicular FG : this line will pass through the centre , and ...
... circle . G Let the circle of which it is required to find the centre be AGBF . Draw any chord AB ( fig . 267. ) ; bisect it , and from the point of divi- sion D raise a perpendicular FG : this line will pass through the centre , and ...
Page 292
... circle . 1015. PROB . XIX . To inscribe an equilateral triangle in a given circle . Through the centre C draw any diameter AB ( fig . 378. ) ; from the point B as a centre , with the radius BC of the given circle , describe an arc DCE ...
... circle . 1015. PROB . XIX . To inscribe an equilateral triangle in a given circle . Through the centre C draw any diameter AB ( fig . 378. ) ; from the point B as a centre , with the radius BC of the given circle , describe an arc DCE ...
Page 331
... circle whose circumference is 36 . Here 22 : 7 : 36 : 1119 ; or , 36x7 22 1119 , the diameter required . 1221. PROBLEM VIII . To find the length of any arc of a circle . Or Rule 1. Multiply the decimal 01745 by the number of degrees in ...
... circle whose circumference is 36 . Here 22 : 7 : 36 : 1119 ; or , 36x7 22 1119 , the diameter required . 1221. PROBLEM VIII . To find the length of any arc of a circle . Or Rule 1. Multiply the decimal 01745 by the number of degrees in ...
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angle appears arch architect architecture axis base beam becomes bricks building built called cathedral centre century church circle colour columns common considered construction contained course covered curve describe diameter direction divided draw edifices effect employed equal erected examples experiments extremely face feet figure force four front give given greater half horizontal houses inches iron Italy joints length less lime material means mouldings nave nearly necessary observed obtained parallel period perpendicular piece placed plane portion practice principal produced Prop proportion quarries radius remains respect Roman roof round says side similar solid square stone strength style supposed surface temple thickness timber tower triangle upper vault vertical walls weight whereof whole wood