https://www.khanacademy.org/math/cc-fourth-grade-math/plane-figures/imp-line-of-symmetry/v/identifying-symmetrical-figures 2022-10-06T09:48:27.705455518Z Identifying symmetrical figures Lindsay identifies lines of symmetry on three shapes. video https://cdn.kastatic.org/ka_thumbnails_cache/34fd22eb-3b8f-4a12-9b87-9d9f111079bd_1280_720_base.png Identifying symmetrical figures Lindsay identifies lines of symmetry on three shapes. https://cdn.kastatic.org/ka-youtube-converted/59s_CQjTD6w.mp4/59s_CQjTD6w.mp4 333 Symmetry of 2 D shapes https://www.khanacademy.org/math/cc-fourth-grade-math/plane-figures/imp-line-of-symmetry/a/symmetry-review 2021-06-30T20:49:30Z Symmetry review Review symmetrical shapes and lines of symmetry.  Then, try some practice problems. article https://www.khanacademy.org/math/cc-fourth-grade-math/plane-figures/imp-line-of-symmetry/e/axis_of_symmetry 2026-03-24T23:41:07.080866137Z Identify line symmetry Practice identifying lines of symmetry on shapes and determining whether a shape has line symmetry. Christopher Wobbles Seymour 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 of 2 D shapes 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 of 2 D shapes 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