# Q2, W3: November 16-20 Geometry Teacher Kristin Andreason Geometry Honors 8 November 16-20 Unit 2B: Congruence of Proofs with Triangle Properties
Standard(s) Taught

MAFS.912.G-CO.2.7: Use the definition of congruence in terms of rigid motions to show that two triangles are congruent if and only if corresponding pairs of sides and corresponding pairs of angles are congruent.

MAFS.912.G-SRT.2.5: Use congruence and similarity criteria for triangles to solve problems and to prove relationships in geometric figures.

Learning Targets and Learning Criteria
• Students will be able to determine whether or not two triangles are congruent by the Triangle Congruence Postulates (SSS, SAS, ASA, AAS, and HL)
• apply triangle congruence and triangle similarity to solve problems (e.g., indirect measure, missing sides/angle measures, side splitting).
• apply triangle congruence and triangle similarity to prove relationships in geometric figures.
• use CPCTC (Corresponding Parts of Congruent Triangles are Congruent) to find missing sides/angles AFTER triangles are proved congruent.
Classroom Activities

Monday/Tuesday:

1. Students will log onto the Zoom session
2. Students will take notes on CPCTC
3. We will look at some proofs together on IXL K.7
4. Students will do a Trangle Proofs “Peel and Stick” Activity

Wednesday:

1. Students will log onto the Zoom session
2. Students will do a Proofs Cut Out Activity

Thursday/Friday:

1. Students will log onto the Zoom session
2. We will do pages 98-101 in the Math Nation practice book (select problems)
Assignments Due
• Proofs Peel and Stick Activity
• Proofs Cut Out Activity
• Math Nation problems (pages 98-101)