## An Encyclopaedia of Architecture, Historical, Theoretical, and Practical |

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Page 271

bisect it , and from the point of division D raise a

pass through the centre , and consequently , if it be bisected , the point of division

will be the centre . If the centre of the circle be not in the line FG , it must be ...

bisect it , and from the point of division D raise a

**perpendicular**FG : this line willpass through the centre , and consequently , if it be bisected , the point of division

will be the centre . If the centre of the circle be not in the line FG , it must be ...

Page 284

make right angles with the lines AC , AD , it will be

which passes through these lines . If the line AB were not

FDCG , another plane might be made to pass through the point A , to which the

AB ...

make right angles with the lines AC , AD , it will be

**perpendicular**to the planewhich passes through these lines . If the line AB were not

**perpendicular**to theFDCG , another plane might be made to pass through the point A , to which the

AB ...

Page 328

In order to obtain the angles formed by the faces of an oblique pyramid ( fig . 489

. ) , through some point q of the axis draw the

base oqmq ' o ' of the right pyramid mpo , whose developement is shown in fig .

In order to obtain the angles formed by the faces of an oblique pyramid ( fig . 489

. ) , through some point q of the axis draw the

**perpendicular**mo , showing thebase oqmq ' o ' of the right pyramid mpo , whose developement is shown in fig .

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angle appears arch architect architecture base beam becomes bricks building built called cast cathedral centre century church circle colour columns common considered construction contains course covered curve depth 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 nearly necessary observed obtained original parallel period perpendicular piece placed plane plates 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