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GeoGebra Slider that shows the angle sum property for quadrilaterals

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GeoGebra Slider that shows the angle sum property for quadrilaterals

The slider allows the interior angles of the quadrilateral to change.  the 4 interior angles of the quadrilateral are also organized with the same vertex (like a circle).  As they interior angles of the quadrilateral change, the same 4 angles change in the circular format.

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GeoGebra Slider that shows the properties of kites

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GeoGebra Slider that shows the properties of kites

Slider shows the detailed properties of a kite, including the properties of the diagonals of a kite.

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GeoGebra Slider that shows the properties of special quadrilaterals

Resource:
GeoGebra Slider that shows the properties of special quadrilaterals

Slider shows properties of special quadrilaterals (square, rhombus, rectangle and parallelogram).

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MARS FAL: Evaluating Statements about Length and Area

Resource:
MARS FAL: Evaluating Statements about Length and Area

This lesson unit is intended to help you assess how well students can:
Understand the concepts of length and area.
Use the concept of area in proving why two areas are or are not equal.
Construct their own examples and counterexamples to help justify or refute conjectures.

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