Warm up dealt with recognizing triangle congruence in a case involving parallel lines. Took assessment. Passed out guided notes.
Notes from board
Homework
take guided notes (blank outline here) on this video: link
Warm up was a simple 2 column proof involving SAS and CPCTC used to prove the Isosceles Triangle Theorem. Passed back assessments, then did more examples involving proofs and introduced the HL congruence criteria. Started proofs involving parallel lines.
Notes from board
Homework
p 159 #8-12
next assessment is 11/20 (1B) or 11/21 (2A 3A 4A)
Resources
proof using midpoint and CPCTC : LINK
proof using parallel lines and cpctc: LINK
proof using an angle bisector: LINK
several proof examples: LINK
mixed examples of proofs: LINK
Warm up was an angle chase that made use of the Isosceles Triangle Theorem. Went over hw, then classified all triangle types in one compound figure, then worked on challenging, multi-step overlapping proofs in small groups.
Notes from board
Homework
do this handout (blank copy)
assessment is Monday for 1B, Tuesday for all others
Resources
proof using midpoint and CPCTC : LINK
proof using parallel lines and cpctc: LINK
proof using an angle bisector: LINK
several proof examples: LINK
mixed examples of proofs: LINK