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Amazing Triangles

Seventh graders use the Geometers' Sketchpad to review triangles and quadrilaterals. They enlarge the figures using 2:1 and 3:1 ratios to determine if the sum of the angles changes. Students explain how to dilate triangles and quadrilaterals so that the angles and sides remain the same.

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Lesson Plans
1 hr
Instructional Strategies
Skills Practice
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