https://www.khanacademy.org/math/geometry/xff63fac4:hs-geo-transformation-properties-and-proofs/hs-geo-symmetry/v/axis-of-symmetry 2021-06-30T20:49:36Z Intro to reflective symmetry Introduction to the concept of an "axis of symmetry" Sal Khan video https://cdn.kastatic.org/googleusercontent/RX22YtkIO09r8CTvJ3jTdp0j9E8aE-4NaE_FdQbNSyGk6MP49fxOTEHnX4tX4eOfH6wT8gsXpSCV-F8Q2fmkgnmW Intro to reflective symmetry Introduction to the concept of an "axis of symmetry" https://cdn.kastatic.org/ka-youtube-converted/LrTn4cvsewk.mp4/LrTn4cvsewk.mp4 167 Symmetry https://www.khanacademy.org/math/geometry/xff63fac4:hs-geo-transformation-properties-and-proofs/hs-geo-symmetry/e/symmetry-of-two-dimensional-shapes 2024-03-11T03:39:15.267265986Z Reflective symmetry of 2D shapes Analyze various shapes according to their reflective symmetries. Tomer Gal exercise https://www.khanacademy.org/math/geometry/xff63fac4:hs-geo-transformation-properties-and-proofs/hs-geo-symmetry/v/example-rotating-polygons 2021-02-16T16:08:13Z Intro to rotational symmetry Sal checks whether various figure are symmetrical under a 180 degrees rotation. Sal Khan video https://cdn.kastatic.org/googleusercontent/sjvgJaDero2jqNHDjxN-uzBv5YH0m-lNVi5mvuC-MjglbNRSb3wvcN30eVZYHAo5Y_EEdm0jBKuhW4EB_T8CRvY6 Intro to rotational symmetry Sal checks whether various figure are symmetrical under a 180 degrees rotation. https://cdn.kastatic.org/ka-youtube-converted/P35LyN9g0oI.mp4/P35LyN9g0oI.mp4 248 Symmetry https://www.khanacademy.org/math/geometry/xff63fac4:hs-geo-transformation-properties-and-proofs/hs-geo-symmetry/e/rotational-symmetry-of-2d-shapes 2026-03-31T08:44:48.259988263Z Rotational symmetry of 2D shapes Identify rotational symmetry in figures by determining magnitudes of rotations which map a figure onto itself. Charlotte Auen exercise https://www.khanacademy.org/math/geometry/xff63fac4:hs-geo-transformation-properties-and-proofs/hs-geo-symmetry/v/constructing-quad-based-on-symmetry 2021-02-16T16:08:13Z Finding a quadrilateral from its symmetries Two of the points that define a certain quadrilateral are (0,9) and (3,4). The quadrilateral has reflective symmetry over the line y=3-x. Draw and classify the quadrilateral. Sal Khan video https://cdn.kastatic.org/googleusercontent/vTap7hUb81r_yd_qDjsfrwjpBNJ6vINF9r23PaqqB1tZjGldZkUsPPVuhP0BLLpZlfttEw2kouY31-JXuWiM5KPyrw Finding a quadrilateral from its symmetries Two of the points that define a certain quadrilateral are (0,9) and (3,4). The quadrilateral has reflective symmetry over the line y=3-x. Draw and classify the quadrilateral. https://cdn.kastatic.org/ka-youtube-converted/-nufZ41Kg5c.mp4/-nufZ41Kg5c.mp4 187 Symmetry