Today our goal was to get a real grasp on Triangle Congruence Shortcuts: to discover that ASA and SAA are valid shortcuts, to practice apply SSS and SAS for basic mastery, and to understand and begin to apply the notion that there are three more parts that are also congruent if you apply SSS, SAS, ASA, or SAA.
We put some serious energy into beginning the concept of proving with congruent triangles. We had a fill-in-the-blank proof of "Base angles of an isosceles triangle are congruent."
Tonight's homework is more of the same... applying the shortcuts. Be sure to write out which triangles are congruent and why. There are 5 "Cannot Be Determined" on the homework #8: pp 223-4: 17, 20, 21 and pp 227-8: 1-15.
Test is coming soon: Thurs-Fri next week.