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

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Page 267

Whence the quadrilateral figure GLFM is a rectangle , its four

the side LG is equal to the

Whence the quadrilateral figure GLFM is a rectangle , its four

**angles**being right**angles**. In the triangles GLF , FMG the ... Wherefore the**angle**LFG opposite tothe side LG is equal to the

**angle**FGM oppo - 76 site to the side FM . - to Remark .Page 268

equal . c D But the

the alternate

...

equal . c D But the

**angle**= is equal to the alternate**angle**B , and the**angle**y tothe alternate

**angle**C . Therefore , substituting B for x , and C for y , the three**angles**B , A , C are together equal to two right**angles**. CorollARY . Hence , if two...

Page 272

be a tangent and TD a chord drawn from the point of contact T ; the

measured by half the arc TFD , and the

CML the

...

be a tangent and TD a chord drawn from the point of contact T ; the

**angle**ATD ismeasured by half the arc TFD , and the

**angle**BTD is measured ... In the triangleCML the

**angle**M being a right**angle**, the two remaining**angles**are ( Prop . 22 . )...

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angle appears arch architect architecture base beam becomes bricks building built called 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 height horizontal houses inches iron Italy joints length less lime material means middle mouldings 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 whereof whole wood