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

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Page 283

If two right lines LM , FG be drawn , in these two

AB , these will form four angles at the ... but

perpendi . cular to the

with the ...

If two right lines LM , FG be drawn , in these two

**planes**, perpendicular to the lineAB , these will form four angles at the ... but

**plane**: and the line AB will beperpendi . cular to the

**plane**MLGFPN , because it will make right angles BCMwith the ...

Page 284

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

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

FDCG , another

AB ...

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

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

FDCG , another

**plane**might be made to pass through the point A , to which theAB ...

Page 770

always considered a boundless level

ground

point of sight is the fixed place of the eye of the observer , viewing the object or ...

always considered a boundless level

**plane**. The**plane**X in the figure is theground

**plane**, upon which is placed the object ABCDFHK . 4 The point of view orpoint of sight is the fixed place of the eye of the observer , viewing the object or ...

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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