Access Point #: MAFS.912.G-GPE.2.AP.5a (Archived Access Point)


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Using slope, prove lines are parallel or perpendicular.

Clarifications:

Essential Understandings

Concrete:

  • Identify parallel lines given a graph.
  • Identify perpendicular lines given a graph.
  • Identify the slope of a line given the equation.
  • Identify the slope of a line given the graph.
  • Identify characteristics of lines that are parallel.
  • Identify characteristics of lines that are perpendicular.
Representation:
  • Given the equation of a line, identify the slope..
  • º The slope of parallel lines is identical..
    º The slopes of perpendicular lines is negative reciprocals.

Number: MAFS.912.G-GPE.2.AP.5a Category: Access Points
Date Adopted or Revised: 07/14 Cluster: Use coordinates to prove simple geometric theorems algebraically. (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-GPE.2.5: Prove the slope criteria for parallel and perpendicular lines and use them to solve geometric problems (e.g., find the equation of a line parallel or perpendicular to a given line that passes through a given point).




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