Mathematics (2019) Grade(s): 09-12 - Geometry with Data Analysis

MA19.GDA.34

Use congruence and similarity criteria for triangles to solve problems in real-world contexts.

Unpacked Content

Knowledge

Students know:
  • Criteria for congruent (SAS, ASA, AAS, SSS) and similar (AA) triangles and transformation criteria.
  • Techniques to apply criteria of congruent and similar triangles for solving a contextual problem.
  • Techniques for applying rigid motions and dilations to solve congruence and similarity problems in real-world contexts.

Skills

Students are able to:
  • Accurately solve a contextual problem by applying the criteria of congruent and similar triangles.
  • Provide justification for the solution process.
  • Analyze the solutions of others and explain why their solutions are valid or invalid.
  • Justify relationships in geometric figures through the use of congruent and similar triangles.

Understanding

Students understand that:
  • Congruence and similarity criteria for triangles may be used to find solutions of contextual problems.
  • Relationships in geometric figures may be proven through the use of congruent and similar triangles.

Vocabulary

  • Congruence and similarity criteria for triangles
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