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Use various methods (such as dynamic geometry software) to explore properties of triangles and quadrilaterals. 0606.1.10

1. Angle Properties of Triangles - explanation from a tutoring site
2. Angles - Practice your knowledge of acute, obtuse, and alternate angles. Also, practice relationships between angles - vertical, adjacent, alternate, same-side, and corresponding 3. Exploring Properties of Rectangles and Parallelograms Using Dynamic Software - an environment in which students can explore geometric relationships and make and test conjectures 4. Interior and Exterior Angles and Sides - properties of triangles from Math Warehouse
5. Making Triangles - investigating the Concept of Triangle and the Properties of Polygons (from NCTM)  6. Measuring Angles - Practice lining up and reading a protractor while you measure a set of angles in a fun learning activity or 7. Polygons: Properties of Triangles - properties of triangles and interior angles of triangles
8. Properties of Quadrilaterals - flash cards from the Quizlet site 9. Properties of Quadrilaterals - [Quia quiz] This "pop-up" activity tests your understanding of the properties of the quadrilateral family 10. Properties of Quadrilaterals - properties of quadrilaterals and other related figures 11. Properties of Quadrilaterals - explanation of the properties followed by examples and a twenty-question quiz, answers at the bottom of the page   12. Properties of Triangles - a tutorial designed to improve and deepen students understanding of the characteristics and properties of triangles 13. Quadrilateral Properties - flash video lesson on how quadrilaterals are alike and different 14. Quadrilateral Quest - students drag shapes that match the given conditions, at completion of an activity other activities are available 15. Quadrilateral Quest - Students assess their skill at matching quadrilaterals with their properties. They select the one figure that does not satisfy each of the set of properties. Following Six quests there is a quiz. 16. Quadrilaterals - explanation of properties of quadrilaterals followed by ten questions to check for understanding
18. Theorems and Postulates - a partial listing of the more popular theorems, postulates and properties
19. Triangle - This Wikipedia article starts simple and eventually reached college level
20. Triangle Explorer - This applet allows the user to study the nature of triangles and their area. This activity would work well in same ability groups of two or three for about twenty-five to thirty minutes if you use the exploration questions and fifteen minutes otherwise. 21. Triangle Identification - type of triangle, given its angles - instruction and review, practice, and a quiz & 22. Triangles - the essential rules governing triangles are few and easy to master
23. Virtual Protractor - ten online activities investigating angles or  site for teachers | PowerPoint show | Acrobat document | Word document | whiteboard resource | sound | video format | interactive lesson | a quiz | lesson plan | to print Internet4classrooms is a collaborative effort by Susan Brooks and Bill Byles. 