[Illustration: Fig. 36.]
If, instead of one square within another, it be required to draw one
circle within another, the dimensions of both being given, inclose
each circle in a square. Draw the squares first, and then the circles
within, as in Fig. 36.
[23] [Illustration: Fig. 35.] If either of the sides of the greater
square is parallel to the plane of the picture, as _DG_ in
Fig. 35., _DG_ of course must be equal to _AC_, and _DH_ equal
to _BC_/2, and the construction is as in Fig. 35.