Access Point #: MAFS.912.G-SRT.1.AP.2b (Archived Access Point)


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Given two figures, determine whether they are similar and explain their similarity based on the equality of corresponding angles and the proportionality of corresponding sides.

Clarifications:

Essential Understandings

Concrete:

  • Select two objects that are the same shape.
  • Select two objects that have different shapes.
  • Use appropriate tools as needed to duplicate a shape (e.g., wiki sticks, computers, interactive white boards, markers).
  • Given two shapes, label (identify, point to, mark,) the parts of the figures that are congruent.
Representation:
  • Describe the characteristics of two figures that are the same.
  • Describe the characteristics of two figures that are different.
  • Understand the following concepts and vocabulary: similar, congruent, angles, corresponding and transformation.

Number: MAFS.912.G-SRT.1.AP.2b Category: Access Points
Date Adopted or Revised: 06/14 Cluster: Understand similarity in terms of similarity transformations. (Geometry - Major Cluster)

Clusters should not be sorted from Major to Supporting and then taught in that order. To do so would strip the coherence of the mathematical ideas and miss the opportunity to enhance the major work of the grade with the supporting clusters.

Related Standards

Name Description
MAFS.912.G-SRT.1.2: Given two figures, use the definition of similarity in terms of similarity transformations to decide if they are similar; explain using similarity transformations the meaning of similarity for triangles as the equality of all corresponding pairs of angles and the proportionality of all corresponding pairs of sides.



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