We started the class with some fraction practice. We’re going to do that from time to time to help improve those skills.
Then we looked at the Pythagorean Theorem. This is a review, but lots of you weren’t familiar with it so we took a little longer than I’d planned.
If you need another explanation, here are a couple you might like:
Anyway, we took the “original” formula and rearranged it in a couple of ways:
In this form it’s easier to calculate , one of the short sides of the triangle. We then went a step further using the inverse operation to squaring, which is to take a square root:
since (it’s not negative).
I handed out a page of practice work. You need to finish the front for homework, but not the back (that’s for tomorrow!).