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**Topic Splash Quadrilaterals**

Maria Sabetta Roger Williams University

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**Developer Page Developer Materials Student Materials Overview**

Resources Student Materials Introduction Internet Activities Quadrilaterals Conclusions/Extensions Student Worksheet

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**Overview NCTM Standards Assessment Geometry 6-8**

Analyze characteristics and properties of two- and three-dimensional geometric shapes and develop mathematical arguments about geometric relationships Understand relationships among the angles, side lengths, perimeters, areas, and volumes of similar objects Use visualization, spatial reasoning, and geometric modeling to solve problems Draw geometric objects with specified properties, such as side lengths or angle measures Assessment Students will be assessed on their completion of their worksheet, accuracy of information about quadrilaterals, and understanding the properties of different quadrilaterals.

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**Topic Splash References**

Resources Credits An Introduction to Quadrilaterals Grades 6 - 8: Geometry Floor Tiles Topic Splash References Social Sciences Resource Center AT&T Education Mountain City (TN) Elementary School OZLINE Charleston County (SC) School District

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**Student Materials Introduction Internet Activities**

Quadrilaterals Conclusion/Extensions Student Worksheet

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Introduction This topic splash activity is designed to introduce you to quadrilaterals. You will be introduced to three different types of four-sided polygons, rectangles, parallelograms, and trapezoids. You will search the internet to complete the worksheet and answer questions based on each one of these quadrilaterals. You will then work in groups and create your own quadrilateral using the internet.

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Internet Activities Floor Tiles

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**Quadrilaterals Rectangle**

Quadrilaterals - Square, Rectangle, Rhombus, Trapezoid, Parallelogram Isosceles Trapezoid Complete the Quadrilateral Worksheet. To find the properties and definition of a rectangle, rhombus, and parallelogram, visit these websites. Before doing this, visit the Floor Tiles website.

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**Conclusion/Extensions**

You will now be able to connect your knowledge of angles, lines, and congruency to many different polygons, now including quadrilaterals. Discussion of the importance of knowing the characteristics of different types of quadrilaterals. To learn more about properties of quadrilaterals, visit these websites: Polygons - Quadrilaterals - First Glance The Quadrilateral Family Figures and polygons

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**Worksheet on Quadrilaterals**

Chart A rectangle has ___ pairs of parallel sides, ___ pairs of equal sides, and ___ right angles. Can you create a rectangle using the Floor Tiles Activity? Using the information button, can you show that what you made is a rectangle? Show that you have the necessary characteristics of a rectangle. Show and explain your work. A rhombus has ___ pairs of parallel sides, ___ equal sides, and ___ pairs of congruent angles. Can you create a rhombus with the Floor Tiles Activity? Using the information button, can you show that what you made is a rhombus? Show that you have the necessary characteristics of a rhombus. Show and explain your work. An isosceles trapezoid has ___ pairs of parallel sides, ___ equal sides, and ___ pairs of congruent angles. Can you create an isosceles trapezoid with the Floor Tiles Activity? Using the information button, can you show that what you created is an isosceles trapezoid. Show and explain your work.

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