# Geometry plane solid ad spherical : in six books : to which is added in an appendix the theory of projection so far asit is auxiliary to geometry : with and account of the plane sections of the cone and cylinder : in which : certain general properties of the conic sections are demonstrated by help of the foregoing theory.

## Geometry plane solid ad spherical : in six books : to which is added in an appendix the theory of projection so far asit is auxiliary to geometry : with and account of the plane sections of the cone and cylinder : in which : certain general properties of the conic sections are demonstrated by help of the foregoing theory.

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