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ERIC Number: EJ886046
Record Type: Journal
Publication Date: 2010-May
Pages: 4
Abstractor: As Provided
Reference Count: 0
ISSN: ISSN-0746-8342
When Are Two Sets Congruent?
Wetzel, Jack
College Mathematics Journal, v41 n3 p193-196 May 2010
The title question has at least two natural answers, one "global" and one "local." Global: "when they can be made to coincide by a rigid motion of the whole plane;" local: "when there is a one-to-one distance preserving mapping of one onto the other." Self-evidently global implies local. We show that in fact these different notions lead to precisely the same notion of congruence.
Mathematical Association of America. 1529 Eighteenth Street NW, Washington, DC 20036. Tel: 800-741-9415; Tel: 202-387-5200; Fax: 202-387-1208; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A