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Title: Blackboard Sphere
PIRA: 1A 30.41

Demonstrates: Non-Euclidean geometry.
Description: 24" black sphere with stand.

Instructions: Draw triangle on sphere. Creates a non-Eucleanian triangle of greater than 180 degrees.

Items Used: Blackboard hemisphere, chalk.

Notes: Clean after use. Bulky to move. Math Description: None.

Size: 24 Condition: Good. Hazard: None.

Schematic: None. Tech Specs: None. Web Links: cs.unm.edu/~joel/NonEuclid/NonEuclid.html
Non Euclidean Geometry
History:

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