Q1, W7: September 23-27 Geometry

TeacherKristin Andreason
Subject AreaGeometry Honors
Grade Level8
Week #September 23-27
Unit of InstructionUnit 1: Definitions, Segment and Angle Pair Relationships
Standard(s) Taught

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).

MAFS.912.G-GPE.2.6: Find the point on a directed line segment between two given points that partitions the segment in a given ratio.

Learning Targets and Learning Criteria
  • state that parallel lines have the same slope.
  • determine if lines are parallel using their slopes.
  • write the equation for parallel lines.
  • state that perpendicular lines have the opposite reciprocal slopes.(the product of the slopes equals -1).
  • determine if lines are perpendicular using their slopes.
  • write the equation for perpendicular lines.
  • use the slope criteria to prove parallel lines and perpendicular lines.
  • find the point on a directed line segment whose endpoints partitions the line segment into a given ratio. This includes:  finding a missing endpoint given a point and the other endpoint.

    dividing a segment into thirds, fourths, etc. given a ratio, one point and one endpoint finding the other endpoint

  • find a ratio when the endpoints and a point on the line segment is given.
Classroom Activities


  • We will review partitioning a line segment in the Math Nation practice book (section 1, topic 7–1,2, and 6)
  • Students will do more practice Partitioning a Line Segment (worksheet #’s 1,2,6, and 8)
  • We will review writing equations of lines and converting between forms of lines of equations
  • Students will do 5 task cards


  • We will do a review page for the test on Thursday/Friday


  • Students will take a Summative on Angle Relationships
  • After the test, they can work on finishing the assignments on partitioning and task cards
Assignments Due
  • Partitioning worksheet and task cards due on September 30/October 1.
  • Summative on Angle Relationships due on September 26/27.
Additional Resources

All IEP and ESOL accommodations will be provided daily.