Geometry Module 2, Topic E, Lesson 25

Students Studying

In Lesson 26, students discover that the values of the  and  ratios in a right triangle depend solely on the measure of the acute angle by which the adjacent, opposite, and hypotenuse sides are identified.  To do this, students first learn how to identify these reference labels.  Then, two groups take measurements and make calculations of the values of the  and  ratios for two sets of triangles, where each triangle in one set is similar to a triangle in the other.  This exploration leads to the conclusion regarding the “incredibly useful ratios.”

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Common Core Learning Standards

CCLS State Standard
G.SRT.6 Understand that by similarity, side ratios in right triangles are properties of the angles in the...

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