Perspective and geometrical drawing adapted to the use of candidates for second and third-class teachers' certificates . Fig. 73. Let AB, CD and EF be the given sides, no two of which,taken together, are equal to, or less than, the third. Takeone of them AB, and with centre B, and distance equal 110 DRAWING. to CD describe an arc; with centre A and distance equal toEF describe an arc cutting former arc in G; join GA andGB, completing the triangle. (Fig. 73.)No, 6.—To bisect a s^iven an« Fig. 74. Let BAG be a given angle; with centre A and any distanceAB describe an arc BC; with centre B a
Perspective and geometrical drawing adapted to the use of candidates for second and third-class teachers' certificates . Fig. 73. Let AB, CD and EF be the given sides, no two of which,taken together, are equal to, or less than, the third. Takeone of them AB, and with centre B, and distance equal 110 DRAWING. to CD describe an arc; with centre A and distance equal toEF describe an arc cutting former arc in G; join GA andGB, completing the triangle. (Fig. 73.)No, 6.—To bisect a s^iven an« Fig. 74. Let BAG be a given angle; with centre A and any distanceAB describe an arc BC; with centre B and any distance lessthan half of BC describe an arc; with centre C, and same dis-tance, describe an arc to cut former arc in D; join AD, whichwill bisect the angle. (Fig. 74.) No, 7.—To trisect a right angle.
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Keywords: ., bookcentury1800, booksubjectgeometricald, booksubjectperspective
