Similarity (Day 6)

50 Minute Class, Curriculum, Geometry

Learning Goal: Further develop understanding of how AA criterion relate to similarity and build proficiency with finding corresponding sides.


Note

 

Classwork

 Standards:

  • Common Core
    • HSG.SRT.A – Understand similarity in terms of similarity transformations
    • HSG.SRT.B.4 – Prove theorems about triangles. Theorems include: a line parallel to one side of a triangle divides the other two proportionally, and conversely; the Pythagorean Theorem proved using triangle similarity.
    • HSG.SRT.B.5 – Use congruence and similarity criteria for triangles to solve problems and to prove relationships in geometric figures.
  • TEKS
    • G.7(A) – apply the definition of similarity in terms of a dilation to identify similar figures and their proportional sides and the congruent corresponding angles
    • G.7(B) – apply the Angle-Angle criterion to verify similar triangles and apply the proportionality of the corresponding sides to solve problems
    • G.8(A) – prove theorems about similar triangles, including the Triangle Proportionality theorem, and apply these theorems to solve problems
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