https://www.khanacademy.org/math/geometry/hs-geo-congruence/xff63fac4:hs-geo-congruent-triangles/v/congruent-triangles-and-sss 2021-07-02T09:35:28Z Corresponding parts of congruent triangles are congruent When two triangles are congruent, we can know that all of their corresponding sides and angles are congruent too! Sal Khan video https://cdn.kastatic.org/googleusercontent/I443_grod2oGBOVt8g2JAMc_UGeH-nCQzdC1ennLrKzo0QPgyly7Ouhpcc4J3Xf7TTQ6XA5MPZemfzmJEVqnfIk5bQ Corresponding parts of congruent triangles are congruent When two triangles are congruent, we can know that all of their corresponding sides and angles are congruent too! https://cdn.kastatic.org/ka-youtube-converted/yp49bc4TT-s.mp4/yp49bc4TT-s.mp4 363 Congruency https://www.khanacademy.org/math/geometry/hs-geo-congruence/xff63fac4:hs-geo-congruent-triangles/v/other-triangle-congruence-postulates 2021-07-02T09:35:28Z Triangle congruence postulates/criteria Sal introduces and justifies the SSS, SAS, ASA and AAS postulates for congruent triangles. He also shows that AAA is only good for similarity. For SSA, better to watch next video. Sal Khan video https://cdn.kastatic.org/googleusercontent/0eRO4OWRbVtbriGmo7x79sNd7U-XMRfk7oYDXtdz4Megakos8_IubqGv5NG1xm-jaYrBSJ2-ythdRqyimqwmZlY0iw Triangle congruence postulates/criteria Sal introduces and justifies the SSS, SAS, ASA and AAS postulates for congruent triangles. He also shows that AAA is only good for similarity. For SSA, better to watch next video. https://cdn.kastatic.org/ka-youtube-converted/8Ld8Csu4sEs.mp4/8Ld8Csu4sEs.mp4 808 Congruency https://www.khanacademy.org/math/geometry/hs-geo-congruence/xff63fac4:hs-geo-congruent-triangles/v/finding-congruent-triangles 2021-02-16T16:08:13Z Determining congruent triangles Sal uses the SSS, ASA, SAS, and AAS postulates to find congruent triangles. Sal Khan video https://cdn.kastatic.org/googleusercontent/ZmHWOvQQlpl4g9566EPjogzNfwnGHGWEnq1elLsBPxGams1q0U7rIo-JObb-PuZc82wH84zHkljj7CFSVPN04F4 Determining congruent triangles Sal uses the SSS, ASA, SAS, and AAS postulates to find congruent triangles. https://cdn.kastatic.org/ka-youtube-converted/d5UCZ9hO8X4.mp4/d5UCZ9hO8X4.mp4 448 Congruency https://www.khanacademy.org/math/geometry/hs-geo-congruence/xff63fac4:hs-geo-congruent-triangles/v/calculating-angle-measures-to-verify-congruence 2022-09-10T02:03:40.164764806Z Calculating angle measures to verify congruence Calculate missing angle measures to determine which triangles must be congruent. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/86fb880d-3527-437c-83ba-be4db6be13b1_1280_720_base.png Calculating angle measures to verify congruence Calculate missing angle measures to determine which triangles must be congruent. https://cdn.kastatic.org/ka-youtube-converted/i63Ruo2jj1E.mp4/i63Ruo2jj1E.mp4 269 Congruency https://www.khanacademy.org/math/geometry/hs-geo-congruence/xff63fac4:hs-geo-congruent-triangles/e/congruent_triangles_1 2025-04-25T04:15:25.711210865Z Determine congruent triangles Use the triangle congruence criteria SSS, SAS, ASA, and AAS to determine that two triangles are congruent. Tomer Gal exercise https://www.khanacademy.org/math/geometry/hs-geo-congruence/xff63fac4:hs-geo-congruent-triangles/v/proving-triangle-congruence 2022-09-10T02:03:40.164764806Z Proving triangle congruence Given a figure composed of 2 triangles, prove that the triangles are congruent or determine that there's not enough information to tell. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/49d16c06-10fc-436c-b74a-3cd73bc77723_1280_720_base.png Proving triangle congruence Given a figure composed of 2 triangles, prove that the triangles are congruent or determine that there's not enough information to tell. https://cdn.kastatic.org/ka-youtube-converted/Q8EtrFIHJuc.mp4/Q8EtrFIHJuc.mp4 258 Congruency https://www.khanacademy.org/math/geometry/hs-geo-congruence/xff63fac4:hs-geo-congruent-triangles/e/prove-triangle-congruence 2026-03-08T12:20:34.612865912Z Prove triangle congruence Given figures composed of 2 triangles, complete or find the error in the proof that the triangles are congruent. Charlotte Auen exercise