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In this program, an explorer, a secret agent, and other experts take a look at the wide spectrum of polygons, ranging from triangles to n-gons. An examination of the general properties of polygons, including a discussion of concave and convex regions, paves the way for understanding the quadrilateral. Two theorems are also introduced, and a proof that opposite sides of a parallelogram are congruent is carried out as well. (12 minutes)



 
                

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Copyright date: ©1999




     


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Surface Area and Volume
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Whether wallpapering a footlocker or filling a cylinder with corncobs, a knowledge of three-dimensional shapes is essential. This program demystifies the subjects of surface area and volume by sharing solid information backed up by the surface area f...(more details)
 
Geometry Basics
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This program presents the building blocks that every student of geometry needs to understand. Topics addressed include inductive and deductive reasoning; terminology such as points, lines, planes, and space; six core postulates; five essential theore...(more details)
 
Right Triangles and the Pythagorean Theorem
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Who is Pythagoras, and why is he so important to geometry? Using a pithy discussion of altitudes and how to solve for the side lengths of right triangles-plus two proofs involving an altitude drawn in a right triangle-this program neatly sets the sta...(more details)
 
Introduction to Triangles
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Can a used-car salesman introduce the subject of triangles? One does in this program, which begins with the fundamentals, including how to classify triangles both by their sides and by their angles. In addition, two theorems are introduced and proved...(more details)
 
Similar Triangles
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If Pam and a telephone pole are each casting a shadow, how can the height of the pole be determined indirectly? This program keeps the subject of similar triangles in proportion as it describes the Angle-Angle Similarity Postulate and the Side-Angle-...(more details)
 


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