Perspective and geometrical drawing adapted to the use of candidates for second and third-class teachers' certificates . Fig. In first, let AB be the given line; erect at A a perpendicularand make it equal to AB; with centre C and distance CAdescribe arc AD; with centre B and distance BA describe GEOMETRICAL DRAWING. 107 arc to meet former arc in D; join CD and BD, completingthe square. (Fig. Q6,) . (b) On a given diagonal AB. With centre A and distance greater than half of AB, de-scribe arc CD, and with centre B and same distance describean arc to cut former arc in C and D; join CD and p
Perspective and geometrical drawing adapted to the use of candidates for second and third-class teachers' certificates . Fig. In first, let AB be the given line; erect at A a perpendicularand make it equal to AB; with centre C and distance CAdescribe arc AD; with centre B and distance BA describe GEOMETRICAL DRAWING. 107 arc to meet former arc in D; join CD and BD, completingthe square. (Fig. Q6,) . (b) On a given diagonal AB. With centre A and distance greater than half of AB, de-scribe arc CD, and with centre B and same distance describean arc to cut former arc in C and D; join CD and produceboth wajs; with centre E and distance E A or EB describe acircle cutting diameter in F and G; join FA, FB, GA andGB, completing the square. (Fig. 67.) iTo. 3,—To construct an oblong of given dimensions.
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Keywords: ., bookcentury1800, booksubjectgeometricald, booksubjectperspective
