# Q1, W6: September 21-24 Geometry Teacher Kristin Andreason Geometry Honors 8 September 21-24 Unit One: Definitions, Segment and Angle Pair Relationships
Standard(s) Taught

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.

MAFS.912.G-CO.4.12:  Make formal geometric constructions with a variety of tools and methods (compass and straightedge, string, reflective devices, paper folding, dynamic geometric software, etc.)  This includes: copying a segment; copying an angle; bisecting a segment; bisecting an angle; constructing perpendicular lines, including the perpendicular bisector of a line segment; and constructing a line parallel to a given line through a point not on the line.

Learning Targets and Learning Criteria
• 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.
• identify the tools used in formal constructions.
• use tools and methods to precisely copy a segment.
• use tools and methods to precisely copy an angle.
• use tools and methods to precisely bisect a segment.
• use tools and methods to precisely bisect an angle.
• construct perpendicular lines and bisectors.
• construct a line parallel to a given line through a point not on the line.
Classroom Activities

Tuesday:

1. We will do Partitioning a Line Segment Notes (p. 11 ISN)
2. Students will do a Partitioning a Line Segment worksheet
3. Students will begin a Mathspace assignment “Equations of Lines”

Wednesday:

1. Students will begin a Mathspace assignment “Equations of Lines”

Thursday/Friday:

1. Students will take notes on Constructions.
2. We will watch constructions on Math Open Reference.
3. Students will finish the Mathspace assignment
Assignments Due
• Partitioning a Line Segment practice sheet.
• Mathspace Assignment “Equations of Lines”