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Geometry: Similarity and Proportion Classroom ActivitiesDownload
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Constructing Similar Triangles

Students investigate three different methods of constructing similar triangles.
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Midsegments of Triangles

Students explore the properties of the midsegment, a segment that connects the midpoints of two sides of a triangle.
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Ratios of Similar Figures

Students will explore the ratio of perimeter, area, surface area, and volume of similar figures in two-dimensional figures.
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Side-Splitter Theorem

Students explore the side-splitter theorem by collecting data from a triangle with a line parallel to one of its sides.
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Similar or Congruent?

In this activity, students will explore AAA and SSS relationships in triangles to support understanding of the concepts of triangle similarity and congruence.
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    TI-84 Plus CE
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    TI-84 Plus C Silver Edition
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The Geometric Mean

In this activity, students will establish that several triangles are similar and then determine that the altitude to the hypotenuse of a right triangle is the geometric mean between the segments into which it divides the hypotenuse.
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    TI-84 Plus CE
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    TI-84 Plus C Silver Edition
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