2 COLUMN PROOFS
Sources used:
Greenberg, Dan, and Chris Potter. “Two-Column Proofs | CK-12 Foundation.” CK12-Foundation, https://flexbooks.ck12.org/cbook/ck-12-basic-geometry-concepts/section/2.7/primary/lesson/two-column-proofs-bsc-geom/. Accessed 31 October 2025.
“Illustrative Mathematics | Kendall Hunt.” Illustrative Mathematics | Kendall Hunt, https://im.kendallhunt.com/HS/teachers/2/index.html. Accessed 31 October 2025.
“Two-Column Proof in Geometry | Definition, Elements & Examples - Lesson.” Study.com, https://study.com/learn/lesson/two-column-proof-in-geometry-concept-elements-examples.html. Accessed 31 October 2025.
Credits to tutors from the Learning Center and the Learning Center.
This Resource can be found on the official Learning Center website under Math Resources.