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p - The Official Site - Varsity.com
p - The Official Site - Varsity.com

6.5: Properties of Trapezoids
6.5: Properties of Trapezoids

... 7. Define Isosceles Trapezoid Symmetry Theorem: The perpendicular bisector of the base of an isosceles trapezoid is also the perpendicular bisector of the other base. Therefore this is a reflection-symmetric line for the trapezoid. 8. Mark the congruencies of the isosceles trapezoid at the right. L ...
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Math 9 Study Guide Unit 8 Unit 8 - Circle Geometry Pythagorean

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... perpendicular lines, parallel lines, and line segments. 5) G.CO.5: Given a geometric figure and a rotation, reflection, or translation, draw the transformed figure using, e.g., graph paper, tracing paper, or geometry software. Specify a sequence of transformations that will carry a given figure onto ...
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Rational trigonometry

Rational trigonometry is a proposed reformulation of metrical planar and solid geometries (which includes trigonometry) by Canadian mathematician Norman J. Wildberger, currently an associate professor of mathematics at the University of New South Wales. His ideas are set out in his 2005 book Divine Proportions: Rational Trigonometry to Universal Geometry. According to New Scientist, part of his motivation for an alternative to traditional trigonometry was to avoid some problems that occur when infinite series are used in mathematics. Rational trigonometry avoids direct use of transcendental functions like sine and cosine by substituting their squared equivalents. Wildberger draws inspiration from mathematicians predating Georg Cantor's infinite set-theory, like Gauss and Euclid, who he claims were far more wary of using infinite sets than modern mathematicians. To date, rational trigonometry is largely unmentioned in mainstream mathematical literature.
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