Hand book of calculations for engineers and firemen : Relating to the steam engine, the steam boiler, pumps, shafting, etc. . Produce the given line A B both ways anddraw perpendiculars ^4 E, B F;bisect the external angles A andB by the lines A H, B C, whichmake equal to A B. Draw C Dand H G parallel to A E andequal to A B; from the centerG D, with the radius A B, cutthe perpendiculars at E F, anddraw E F to complete the hexa-gon. A B Fig. 99. Problem XXYJ. To convert asquare into an octagon, Fig. 100. Draw the diagonals of the squarecutting at e; from the corners A B CD, with A e as radius, d
Hand book of calculations for engineers and firemen : Relating to the steam engine, the steam boiler, pumps, shafting, etc. . Produce the given line A B both ways anddraw perpendiculars ^4 E, B F;bisect the external angles A andB by the lines A H, B C, whichmake equal to A B. Draw C Dand H G parallel to A E andequal to A B; from the centerG D, with the radius A B, cutthe perpendiculars at E F, anddraw E F to complete the hexa-gon. A B Fig. 99. Problem XXYJ. To convert asquare into an octagon, Fig. 100. Draw the diagonals of the squarecutting at e; from the corners A B CD, with A e as radius, describe arcscutting the sides at g, h, etc.; andjoin the points so found to completethe
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Keywords: ., book, bookcentury1800, bookdecade1890, bookpublishernewyorktaudel
