Textbook of Engineering Drawing, Second Edition

(Jacob Rumans) #1

------------_____ GeometricaIContructions 4.5


A ...------f...-o''------. :J


8

Fig. 4.7


  1. To circumscribe a hexagon on a given circle of radius R
    construction (Fig. 4.8)


\
\
\.
\

/


A \t-+---1--

B

/
R/
I
I ./
+0

Fig. 4.8

c


I. With centre 0 and radius R draw the given circle.

/
/

o



  1. Using 60° position of the mini draughter or 300-600set square, circumscribe the hexagon
    as shown.

  2. To construct a hexagon, given the length of the side.
    (a) contruction (Fig. 4.9) Using set square

  3. Draw a line AB equal to the side of the hexagon.

  4. Using 30° -60° set-square draw lines AI, A2, and BI, B2.

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