https://www.khanacademy.org/math/geometry/hs-geo-congruence/hs-geo-triangle-congruence/v/proving-the-sss-triangle-congruence-criterion-using-transformations 2022-09-10T02:03:40.164764806Z Proving the SSS triangle congruence criterion using transformations We can prove the side-side-side (SSS) triangle congruence criterion using the rigid transformation definition of congruence. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/d853dece-5a05-451a-a2a7-26ec277866bc_1280_720_base.png Proving the SSS triangle congruence criterion using transformations We can prove the side-side-side (SSS) triangle congruence criterion using the rigid transformation definition of congruence. https://cdn.kastatic.org/ka-youtube-converted/OIRZd5mDu_o.mp4/OIRZd5mDu_o.mp4 347 Triangle congruence from transformations https://www.khanacademy.org/math/geometry/hs-geo-congruence/hs-geo-triangle-congruence/v/proving-the-sas-triangle-congruence-criterion-using-transformations 2022-09-10T02:03:40.164764806Z Proving the SAS triangle congruence criterion using transformations We can prove the side-angle-side (SAS) triangle congruence criterion using the rigid transformation definition of congruence. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/431cb079-572e-4ffd-ba57-7f9a7e3a192f_1280_720_base.png Proving the SAS triangle congruence criterion using transformations We can prove the side-angle-side (SAS) triangle congruence criterion using the rigid transformation definition of congruence. https://cdn.kastatic.org/ka-youtube-converted/CMTeCNILzwU.mp4/CMTeCNILzwU.mp4 271 Triangle congruence from transformations https://www.khanacademy.org/math/geometry/hs-geo-congruence/hs-geo-triangle-congruence/v/proving-asa-and-aas-triangle-congruence 2022-09-10T02:03:40.164764806Z Proving the ASA and AAS triangle congruence criteria using transformations We can prove the angle-side-angle (ASA) and angle-angle-side (AAS) triangle congruence criteria using the rigid transformation definition of congruence. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/8e9a7a62-664a-414c-9ba6-257701870eb3_1280_720_base.png Proving the ASA and AAS triangle congruence criteria using transformations We can prove the angle-side-angle (ASA) and angle-angle-side (AAS) triangle congruence criteria using the rigid transformation definition of congruence. https://cdn.kastatic.org/ka-youtube-converted/5EX7tYQEB_M.mp4/5EX7tYQEB_M.mp4 444 Triangle congruence from transformations https://www.khanacademy.org/math/geometry/hs-geo-congruence/hs-geo-triangle-congruence/v/more-on-why-ssa-is-not-a-postulate 2021-07-02T09:35:35Z Why SSA isn't a congruence postulate/criterion There are some cases when SSA can imply triangle congruence, but not always. This is why it's not like the other triangle congruence postulates/criteria. Sal Khan video https://cdn.kastatic.org/googleusercontent/2skaxTFhD7pYHzjlwbm38DhP7E5LjZ0C_3U9QLJ7qxgCszqQ5V9bQJP9eoxK3p3vK3I1w1N2ZWg8WJiD070e16KxJg Why SSA isn't a congruence postulate/criterion There are some cases when SSA can imply triangle congruence, but not always. This is why it's not like the other triangle congruence postulates/criteria. https://cdn.kastatic.org/ka-youtube-converted/f8svAm237xM.mp4/f8svAm237xM.mp4 444 Triangle congruence from transformations https://www.khanacademy.org/math/geometry/hs-geo-congruence/hs-geo-triangle-congruence/e/justify-triangle-congruence 2022-09-10T02:03:40.164764806Z Justify triangle congruence Justify the criteria for triangle congruence (ASA, SAS, and SSS) using rigid transformations. Charlotte Auen exercise