Tuesday, October 22 nd
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Transcript of Tuesday, October 22 nd
Tuesday, October 22nd
WARM UP
1. Write the correct Trig Ratio to find the missing side
length 2. Find the missing
side length
A
BC 9 x
39˚
Quiz Answers and Scores
4 pts each
Skate Park Project
due ThursdayQuiz
Grade
Today’s Goal
TaskUnderstand
it a little better…
Proofs of the Pythagorean
Theorem
Remember:
a²+b²=c²
Discussion Questions
• For what kind of triangles is the Pythagorean Theorem True?
• Is it true for any right triangle?
Constructing a Proof • Describe how the blue triangle has
moved• Watch what makes a square and
what the side lengths are • Remember a squares side length is
always sidelength²
A Few More Animations…..
Analyzing and Comparing1. Describe what each student has
done. 2. Will the approach lead to a proof of
the theorem?3. Explain how the work can be
improved.
4. Compare the three solutions. 5. Whose solution method do you find
most convincing? Why? 6. Produce a complete correct solution
using your preferred method.
P-21
Penelope’s Method
P-22
Nadia’s Method
P-23
Sophie’s Method
P-24
Proving the Pythagorean Theorem (revisited)
P-25