Gravesande, Willem Jacob 's - An essay on perspective

[51.] Remarks.

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[52.] Corollary.

[53.] Problem II.

[54.] Remark.

[55.] Problem III.

[56.] Method. II.

[57.] Problem IV.

[58.] Example I.

[59.] Example II.

[60.] Remarks.

[61.] Example III. 48. To throw a circle into Perſpective.

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[62.] Remarks.

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[63.] Prob. V. 50. To find the Repreſentation of a Point, elevated above the Geometrical Planc.

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[64.] Operation.

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[65.] Demonstration.

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[66.] Prob. VI. 52. To throm a Pyramid, or Cone, into Perſpective.

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[67.] 53. To determine the viſible Part of the Baſe of a Cone.

[68.] Operation.

[69.] Demonstration.

[70.] Remarks.

[71.] Problem VII. 55. To find the Perſpective of a Line, perpendicular to the Geometrical Plane.

[72.] Operation.

[73.] Demonstration.

[74.] Method II.

[75.] Demonstration.

[76.] Method III.

[77.] Operation, Without Compaſſes.

[78.] Demonstration.

[79.] Scholium.

[80.] Corollary.

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