The Shear Joy of Area
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The geoboard is an excellent vehicle for developing intuitive understandings of various topics in transformational geometry. In particular, the geoboard can be used most effectively in studying the area of various polygonal regions and what happens to the area of the region as its shape is changed. In the activities described in this article, students discover the fact that when a triangle or parallelogram is subjected to a transformation called a shear, its area is not changed.
2021 ◽
Vol 11
(2)
◽
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2018 ◽
Vol 1
(1)
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pp. 1-8
2016 ◽
Vol 22
(1)
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pp. 18-27
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2020 ◽
Vol 2
(1)
◽
pp. 92-104
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2020 ◽
Vol 10
(4)
◽
pp. 485-497
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1972 ◽
Vol 3
(4)
◽
pp. 260-271
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