Learning Goal: Develop understanding of congruence by concluding that every point of each image can be matched up exactly with the other image.

Classwork

• Estimation 180 – Day 133 (Andrew Stadel)
• Warm Up
• Same Size, Same Shape? (Illustrative Mathematics)
  • Lesson Breakdown (Kate Nowak)
  • Handout
• Identifying Congruence Notation
  • Taken from New Visions

Answers

• Link to Answers

Standards

• Common Core
  • HSG.CO.B – Understand congruence in terms of rigid motions
• TEKS
  • G.5(A) – investigate patterns to make conjectures about geometric relationships, including angles formed by parallel lines cut by a transversal, criteria required for triangle congruence, special segments of triangles, diagonals of quadrilaterals, interior and exterior angles of polygons, and special segments and angles of circles choosing from a variety of tools
  • G.6(C) – apply the definition of congruence, in terms of rigid transformations, to identify congruent figures and their corresponding sides and angles