Hand book of calculations for engineers and firemen : Relating to the steam engine, the steam boiler, pumps, shafting, etc. . Fig. 79. Set off the arc IH equal to D E and draw F H. /is equal t-o A as required. Problem VIII. To bisect an angle,Fig. 80. Let A 0 B be the angle; onthe center C cut the sides at A B. On %A and B as centers describe arcs cut-ting at D dividing the angle into twoequal parts. The angle. Fig. 80. Problem IX. To find thecenter of a circle or of an arc ofa circle. First for a circle, .%/Fig. 81. Draw the chord A B, *\bisect it by the perpendicu-lar C D, bounded both ways

---

Hand book of calculations for engineers and firemen : Relating to the steam engine, the steam boiler, pumps, shafting, etc. . Fig. 79. Set off the arc IH equal to D E and draw F H. /is equal t-o A as required. Problem VIII. To bisect an angle,Fig. 80. Let A 0 B be the angle; onthe center C cut the sides at A B. On %A and B as centers describe arcs cut-ting at D dividing the angle into twoequal parts. The angle. Fig. 80. Problem IX. To find thecenter of a circle or of an arc ofa circle. First for a circle, .%/Fig. 81. Draw the chord A B, *\bisect it by the perpendicu-lar C D, bounded both ways bythe circle; and bisect C D forthe center G.

---

Size: 1300px × 1922px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., book, bookcentury1800, bookdecade1890, bookpublishernewyorktaudel