Solid Geometry and Conic Sections, with Appendices on Transversals and Harmonic Division; for the Use of Schools Geometrical Note-Book, containing Easy Problems in Gemotrical Drawing preparatory to the Study of Geometry; for the Use of Schools

R. T.

doi:10.1038/006118a0

Solid Geometry and Conic Sections, with Appendices on Transversals and Harmonic Division; for the Use of Schools Geometrical Note-Book, containing Easy Problems in Gemotrical Drawing preparatory to the Study of Geometry; for the Use of Schools

Nature ◽

10.1038/006118a0 ◽

1872 ◽

Vol 6 (137) ◽

pp. 118-119

Author(s):

R. T.

Keyword(s):

Conic Sections ◽

Solid Geometry

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Solid Geometry and Conic Sections, with Appendices on Transversals, and Harmonic Division, for the Use of Schools Elementary Geometry

Nature ◽

10.1038/009081a0 ◽

1873 ◽

Vol 9 (214) ◽

pp. 81-81

Author(s):

R. T.

Keyword(s):

Elementary Geometry ◽

Conic Sections ◽

Solid Geometry

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Devices for the Mathematics Classroom: Simple paper models of the conic sections

Mathematics Teacher ◽

10.5951/mt.48.1.0042 ◽

1955 ◽

Vol 48 (1) ◽

pp. 42-44

Author(s):

Ethel Saupe

Keyword(s):

Mathematics Classroom ◽

Circular Cone ◽

Conic Section ◽

Conic Sections ◽

Quadratic Equations ◽

Solid Geometry ◽

Second Year

In second year algebra courses students are normally introduced to the conic sections by being told that certain curves which may be represented by quadratic equations in two unknowns are, in fact, equations of conic sections. In solid geometry the same students are told that a section of a right circular cone made by a plane is a conic section. Various kinds of models are occasionally employed to illustrate what the conic sections look like in the geometric sense, but ordinarily little effort is made to tie up the fact that a relation exists between the introduction given in algebra and the models presented in solid geometry.

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