Model for Descriptive Geometry by A. Jullien - Representation of a Pyramid

Set of Geometric Models by A. Jullien, Relief 30

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Object Details

maker

Jullien, A.

Description

Three points, a, b, and c on the horizontal plane make the triangular base of the pyramid. Point (s, s’) at the bend in the wire will be the apex. The three black strings represent the three remaining edges of the pyramid. Notice that the apex is not above the base. The various projections after rotation to the horizontal plane allow the lengths of the sides to be found. The height of the pyramid is segment sS₃.

For more details, see COLL.1986.0885 and 1986.0885.01.01.

Location

Currently not on view

date made

ca 1880

ID Number

1986.0885.01.30

catalog number

1986.0885.01.30

accession number

1986.0885

Object Name

geometric model

Physical Description

paper (overall material)

metal (overall material)

Measurements

overall: 6.5 cm x 7.5 cm x 6.5 cm; 2 9/16 in x 2 15/16 in x 2 9/16 in

place made

France: Île-de-France, Paris

See more items in

Medicine and Science: Mathematics

Science & Mathematics

Jullien Geometric Models

Data Source

National Museum of American History

Subject

descriptive geometry

Metadata Usage

CC0

Link to Original Record

https://n2t.net/ark:/65665/ng49ca746b2-d45d-704b-e053-15f76fa0b4fa

Record ID

nmah_1802217