im.g.2.3.1.True or... Sometimes True?: Triangles
Attribution
Illustrative Mathematics. geometry. unit 2, lesson 3: Congruent Triangles, Part 1https://im.kendallhunt.com/HS/teachers/2/2/3/index.htmlLicensed under the Creative Commons Attribution 4.0 license,https://creativecommons.org/licenses/by/4.0/