This chapter begins the Pythagorean theorem for the students.
We went over that if you have a right triangle you know that the three sides have the relationship a^2 + b^2 = c^2, where a and b are the legs, and c is the hypotenuse.
We learned to find the length of the hypotenuse given 'a' and 'b'. And we learned to find the length of a leg (a or b) given the other leg and they hypotenuse.
This was basic and repeated many times over the semester.
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