Investigation:
https://web.tarleton.edu/team/wp-content/uploads/sites/95/2022/05/geometry1_3.pdf
PG 9 &10: https://www.lakeview2167.com/cms/lib02/MN01001909/Centricity/Domain/123/Checklist%20Concept%208%20Parallel%20and%20Perpendicular%20Slopes.pdf
Activity:
Presentation
Videos
https://www.khanacademy.org/math/geometry/hs-geo-analytic-geometry/hs-geo-parallel-perpendicular-lines/v/classify-lines
https://www.youtube.com/watch?v=LTb2-LE7StE
https://www.youtube.com/watch?v=DSgoYvtMPaE
https://www.youtube.com/watch?v=2mAxmtO4HSE
Practice Activities & Worksheets
https://www.khanacademy.org/math/geometry/hs-geo-analytic-geometry/hs-geo-parallel-perpendicular-lines/e/classifying-lines-as-parallel--perpendicular--or-neither
http://www.wallace.ccfaculty.org/book/2.5%20Parallel%20and%20Perpendicular%20Practice.pdf
https://www.lakeview2167.com/cms/lib02/MN01001909/Centricity/Domain/123/Checklist%20Concept%208%20Parallel%20and%20Perpendicular%20Slopes.pdf
https://nj01000964.schoolwires.net/cms/lib/NJ01000964/Centricity/Domain/69/Parallel%20and%20Perpendicular%20Lines%20Review.pdf
SlopesofParallelandPerpendicularLinesInquiryActivity-1.pdf
SlopesofParallelandPerpendicularLinesInquiryActivity-1.pdf