## Painting - *Euclidian Values of a Squared Circle*

- To "square" a figure, according to the classical Greek tradition, means to construct, with the aid of only straightedge and compass, a square equal in area to that of the figure. The Greeks could square numerous figures, but were unsuccessful in efforts to square a circle. It was not until the 19th century that the impossibility of squaring a circle was demonstrated.
- This painting is an original construction by Crockett Johnson. It begins with the assumprion that the circle has been squared. In this case, Crockett Johnson performed a sequence of constructions that produce several additional squares, rectangles, and circles whose areas are geometrically related to that of the original circle. These figures are produced using traditional Euclidean geometry, and require only straightedge and compass.
- The painting on masonite is #102 in the series. It has a blue-black background and a metal frame. It shows various superimposed sections of circles, squares, and rectangles in shades of light blue, dark blue, purple, white and blue-black. It is unsigned. See 1979.3083.02.13.
- References: Carl B. Boyer and Uta C. Merzbach,
*A History of Mathematics*(1991), Chapter 5. - Crockett Johnson, "A Geometrical Look at the Square Root of Pi,"
*Mathematical Gazette*54 (February, 1970): pp. 59–60. - Location
- Currently not on view

- National Museum of American History

- painter
- Johnson, Crockett

- Credit Line
- Ruth Krauss in memory of Crockett Johnson

- Physical Description
- masonite (substrate material)
- metal (frame material)
- Measurements
- overall: 122.5 cm x 82 cm x 2.5 cm; 48 1/4 in x 32 5/16 in x in

- See more items in
- Medicine and Science: Mathematics
- Science & Mathematics
- Art
- Crockett Johnson

- ca 1970

- Object Name
- painting

- ID Number
- 1979.1093.69
- catalog number
- 1979.1093.69
- accession number
- 1979.1093