Textbook of Engineering Drawing, Second Edition

4.10 Textbook of Enginnering Drawing------------------

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Fig. 4.15

14. To inscribe within a given square ABCD, another square, one angle of the required
    square to touch a side of the given square at a given point
    construction (Fig 4.16)

Fig. 4.16

1. Draw the given square ABeD.


2. Draw the diagonals and where they intersect mark the point O.


3. Mark the given point E on the line AB.


4. With centre 0 and radius OE, draw a circle.
   S. Where the circle cuts the given square mark the points G, H, and F.


5. Join the points GHFE.
   Then GHFE is the required square.


6. To draw an arc of given radius touching two straight lines at right 8rngles to each _
   other.
   construction (Fig 4.17)
   Let r be the given radius and AB and AC the given straight lines. With A as centre and
   radius equal to r draw arcs cutting AB at P and Q. With P and Q as centres draw arcs to
   meet at O. With 0 as centre and radius equal to r draw the required arc.