# Q2, W1: October 15-19

Teacher Kristin Andreason Geometry Honors 8 One Unit 2 (A): Triangle Congruence and Proofs
Standard(s) Taught

MAFS.912.G-CO.1.3:  Given a rectangle, parallelogram, trapezoid, or regular polygon, describe the rotations and reflections that carry it onto itself.

MAFS.912.G-CO.2.8:  Explain how the criteria for triangle congruence (ASA, SAS, SSS, and HL) follow from the definition of congruence in terms of rigid motions.

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 identify a line of symmetry in a geometric figure
• Students will be able to determine the degrees a regular polygon must be rotated to map/carry the figure onto itself
• Students will be able to identify the congruent parts of two triangles
• Students will be able to determine whether or not two triangles are congruent by the Triangle Congruence Postulates (SSS, SAS, ASA, AAS, and HL)
Classroom Activities

Monday/Tuesday:

• Students will work on the Triangle Congruence Packet
• We will look at some of those questions together and determine why the triangles are congruent
• I will show them the geogebra applet on C-Palms to demonstrate rotating a regular polygon
• We will work through a DIA practice test together

Wednesday:

• Classes who did not do the DIA practice test yet because of no school on Monday will do that
• Other classes will look over constructions and also IXL M.8

Thursday/Friday:

• Students will take Geometry DIA 1
Assignments Due
• Geometry DIA 1 is due by Friday, October 19