Skip to main content Skip to main navigation
heart-solid My Visit Donate
Home Smithsonian Institution IK development site for ODI
Press Enter to activate a submenu, down arrow to access the items and Escape to close the submenu.
    • Overview
    • Museums and Zoo
    • Entry and Guidelines
    • Museum Maps
    • Dine and Shop
    • Accessibility
    • Visiting with Kids
    • Group Visits
    • Overview
    • Exhibitions
    • Online Events
    • All Events
    • IMAX & Planetarium
    • Overview
    • Topics
    • Collections
    • Research Resources
    • Stories
    • Podcasts
    • Overview
    • For Caregivers
    • For Educators
    • For Students
    • For Academics
    • For Lifelong Learners
    • Overview
    • Become a Member
    • Renew Membership
    • Make a Gift
    • Volunteer
    • Overview
    • Our Organization
    • Our Leadership
    • Reports and Plans
    • Newsdesk
heart-solid My Visit Donate

Model of a Rectangle Bisected into Two Right Triangles, Ross Surface Form #8

American History Museum

Geometric Model of a Bisected Rectangle, Ross Surface Form #8
There are restrictions for re-using this image. For more information, visit the Smithsonian's Terms of Use page .
International media Interoperability Framework
IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more.
View manifest View in Mirador Viewer
  • Geometric Model of a Bisected Rectangle, Ross Surface Form #8
  • Geometric Model of a Bisected Rectangle, Ross Surface Form #8, Back View
  • Geometric Model of a Bisected Rectangle, Ross Surface Form #8, In Pieces
  • Geometric Models - Ross Surface Forms - Bisected Rhomboid (#9) Second from Left in Top Row

    Object Details

    maker

    Ross, W. W.

    Description

    This is the eighth in a series of models of plane figures (surface forms) designed by William Wallace Ross, a school superintendent and mathematics teacher in Fremont, Ohio. The unpainted rectangular wooden model is bisected along a diagonal. A paper label pasted to the model reads: Oblong 4x6 Bisected. According to Ross, this model demonstrates that a right-angled triangle with unequal sides adjacent to the right angle has half the area of a rectangle.
    Compare models 1985.0112.190 through 1985.0112.202. For further information about Ross models, including references, see 1985.0112.190.

    Location

    Currently not on view

    Credit Line

    Gift of Wesleyan University

    date made

    ca 1895

    ID Number

    1985.0112.192

    accession number

    1985.0112

    catalog number

    1985.0112.192

    Object Name

    geometric model

    Physical Description

    wood (overall material)

    Measurements

    overall: 1 cm x 15 cm x 10 cm; 13/32 in x 5 29/32 in x 3 15/16 in

    place made

    United States: Ohio, Fremont

    See more items in

    Medicine and Science: Mathematics
    Science & Mathematics
    Arithmetic Teaching

    Data Source

    National Museum of American History

    Subject

    Mathematics

    Metadata Usage

    CC0

    Link to Original Record

    https://n2t.net/ark:/65665/ng49ca746a5-2254-704b-e053-15f76fa0b4fa

    Record ID

    nmah_694069

    Discover More

    Dissected wooden sphere laid flat, taking the form of an 8-pointed star.

    Geometrical Models for Arithmetic Teaching

    arrow-up Back to top
    Home
    • Facebook facebook
    • Instagram instagram
    • LinkedIn linkedin
    • YouTube youtube

    • Contact Us
    • Get Involved
    • Shop Online
    • Job Opportunities
    • Equal Opportunity
    • Inspector General
    • Records Requests
    • Accessibility
    • Host Your Event
    • Press Room
    • Privacy
    • Terms of Use