Opener: Interquartile Mean
SLT Triangles 1: I can use similarity to define trigonometric ratios as properties of the angles in a triangle.
The Similar Triangles Project, Part 2:
 Use everyone’s empirical data from Part 1 of this project to determine your theoretical value for each of the ratios: a/e, b/e, and a/b.
 When your group is satisfied with the values of your ratios, add them to the chart on the board.
How do you know if your theoretical values are accurate?
 What are the properties of similar triangles?
 Let’s measure the angles in each of our triangles.
 Let’s use these angles to check out answer.
In conclusion:

The trigonometric ratios are SINE, COSINE, and TANGENT

These ratios are properties of the angles in similar triangles.

So, are rectangles and squares similar?
Next Step: “A Fascinating Chart“
The Similar Triangles Project is due on Wednesday, February 13. Click here to see all parts of the project.
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