Investigating Geometry: Quadrilaterals

Henrico County Public Schools

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Sketchpad New file C.a.R. New file GeoGebra Calculator May 2006

Lesson 6-1: Parallelograms

Objective:

SOL G.9: The student will verify characteristics of quadrilaterals and use properties of quadrilaterals to solve real-world problems.

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Three vertices of parallelogram ABCD are shown on the graph. Using the point tool , plot all three possibilities for the fourth vertex D.

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Parallelogram Properties 1 More Parallelogram Properties 2

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Quadrilateral Midpoints Construct a Parallelogram C.a.R.

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