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Vocabulary - Hartland High School
Vocabulary - Hartland High School

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Ursu Fischer

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Grade 8 - HPEDSB

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Checking the correspondence of a point to a line segment

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Geometry Unit 2 Worksheet 2

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3.1 Pairs of Lines and Angles

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First Semester Geometry Exam Review – January 2015 Chapter 1

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Textbook Sections in order with CMS pacing guide

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Duality (projective geometry)

In geometry a striking feature of projective planes is the symmetry of the roles played by points and lines in the definitions and theorems, and (plane) duality is the formalization of this concept. There are two approaches to the subject of duality, one through language (§ Principle of Duality) and the other a more functional approach through special mappings. These are completely equivalent and either treatment has as its starting point the axiomatic version of the geometries under consideration. In the functional approach there is a map between related geometries that is called a duality. Such a map can be constructed in many ways. The concept of plane duality readily extends to space duality and beyond that to duality in any finite-dimensional projective geometry.
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