# Properties of Quadrilaterals

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## Description

Overview:
This lesson is about properties of quadrilaterals and learning to investigate, formulate, conjecture, justify, and ultimately prove mathematical theorems. Students will: Analyze characteristics and properties of two- and three-dimensional geometric shapes; develop mathematical arguments about geometric relationships; and apply appropriate techniques, tools, and formulas to determine measurements.Explore relationships among classes of two- and three-dimensional geometric objects, make and test conjectures about them, and solve problems involving them. Employ forms of mathematical reasoning and proof appropriate to the solution of the problem at hand, including deductive and inductive reasoning, making and testing conjectures, and using counter examples and indirect proof. Identify, formulate and confirm conjectures. Establish the validity of geometric conjectures using deduction, prove theorems, and critique arguments made by others. (9th/10th Grade Math)
Subject:
Algebra
Level:
High School
Grades:
Grade 9, Grade 10
Material Type:
Activity/Lab, Lecture, Lesson Plan, Teaching/Learning Strategy
Author:
Provider:
Noyce Foundation
Provider Set:
Inside Mathematics
Date Added:
11/30/2011
License:
http://www.insidemathematics.org/
Language:
English
Media Format:
Downloadable docs, Text/HTML, Video

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