If you were not here, you need to get notes from a friend: you need to know the proof of the Pythagorean Theorem and understand the proofs of the 30-60-90 and 45-45-90 Pythagorean Shortcuts.
Students will see their tests if they have not.
We added to HW #9 p 471:13-17 in class.
Problem 17 was used to learn about the "Three Dimensional Pythagorean Theorem" (finding the diagonal of a rectangular prism).
Problem 15 (finding the area of an isosceles triangle) is also important. Problem #6 on p 470 was used to add to the importance of leaving a radical simplified instead of changing it to a decimal (rounded decimals are no longer accurate). Questions over simplifying radicals were answered.
Our new content was the 30-60-90 and 45-45-90 Pythagorean shortcuts.
Notes are downloadable below.
ACTM money is due by Friday.
Practice Wednesday 8 am, Friday (A&E), Friday 3:55-4:40.
HW#10: p 482:1-3 (make a sketch), p 477:1-7 (no decimals).
Quiz Next Monday over 9.1-4 - 28 pts