CHAPTER 3. GEOMETRYeÉáÖÜíW=e=
i~íÉê~ä=ëìêÑ~ÅÉ=~êÉ~W=p=i
^êÉ~=çÑ=Ä~ëÉW=p=_
qçí~ä=ëìêÑ~ÅÉ=~êÉ~W=p=
sçäìãÉW=s=
=
====== =
=
Figure 47.
=- pi=Oπoe=
=- ()
= + = π + =π +
OÇ
p pi Op_ O oe o Ç e ==- s=p_e=πoOe=
=
=
=
dana p.
(Dana P.)
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