EBK MATHEMATICS FOR ELEMENTARY TEACHERS
5th Edition
ISBN: 8220103679497
Author: Beckmann
Publisher: PEARSON
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Textbook Question
Chapter 10.1, Problem 8P
Figure 10.33 shows a rectangle subdivided into four triangles. Jonathan says that because the angles in each of the four triangles add to 180°, the angles in the rectangle add to
180°+180°+180°+180°=720°
but Ben says that the angles in a rectangle add to
90°+90°+90°+90°=360°
Figure 10.33 A rectangle subdivided into four triangles
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EBK MATHEMATICS FOR ELEMENTARY TEACHERS
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