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Constructing an Old Extreme Viewpoint

by Lester H. Lange

This article originally appeared in:
Mathematics Magazine
December, 1987

Subject classification(s): Geometry and Topology | Plane Geometry | Angles
Applicable Course(s): 3.1 Mainstream Calculus I | 4.9 Geometry

To maximize the angle of observation of a picture hanging on the wall, a classical optimization problem in calculus, the author describes an easy geometric construction of the solution without calculus.

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