Access Point #: MAFS.912.G-CO.2.AP.6b (Archived Access Point)


This document was generated on CPALMS - www.cpalms.org



Knowing that rigid transformations preserve size and shape or distance and angle, use this fact to connect the idea of congruency and develop the definition of congruent.

Clarifications:

Essential Understandings

Concrete:

  • Using manipulatives, demonstrate the following transformations:

    Image for Translation (Slide), Reflection (Flip), and Rotation (Turn).
  • Teacher resource: Click Here
Representation:
  • A rigid transformation is one in which the pre-image and the image both have the exact same size and shape.
  • If one shape can become another using turns, flips and/or slides, then the shapes are congruent. Congruent is two objects with the same shape and same size.

Number: MAFS.912.G-CO.2.AP.6b Category: Access Points
Date Adopted or Revised: 07/14 Cluster: Understand congruence in terms of rigid motions. (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-CO.2.6: Use geometric descriptions of rigid motions to transform figures and to predict the effect of a given rigid motion on a given figure; given two figures, use the definition of congruence in terms of rigid motions to decide if they are congruent.



Related Courses

Name Description
1200400: Foundational Skills in Mathematics 9-12
1206300: Informal Geometry
1206310: Geometry
1206320: Geometry Honors
7912060: Access Informal Geometry
1206315: Geometry for Credit Recovery
7912065: Access Geometry