https://www.khanacademy.org/math/geometry/hs-geo-solids/hs-geo-2d-vs-3d/a/getting-ready-for-hs-solid-geometry 2022-09-10T02:03:40.164764806Z Getting ready for solid geometry Practicing finding area of 2D figures, volume of 3D figures, and comparing proportional relationships will help us apply what we know from simpler figures to more complicated solid figures. article https://www.khanacademy.org/math/geometry/hs-geo-solids/hs-geo-2d-vs-3d/a/solid-geometry-vocabulary 2023-04-03T02:28:37.893229479Z Solid geometry vocabulary Learn the names of common solid figures, the parts of those solids, and how we describe cross-sections of them. article https://www.khanacademy.org/math/geometry/hs-geo-solids/hs-geo-2d-vs-3d/v/ways-to-cut-a-cube 2021-05-05T14:53:19Z Ways to cross-section a cube Learn about all the different ways we can obtain cross-sections of a cube. video https://cdn.kastatic.org/googleusercontent/K0L3EtY2ILGPaE-1bRdh4wi5g9aK6yrPyRGOwXkp6W_aFY1fWIvYhdHu4i0wN_9wvck021r_VjlNn1zLM2LJLuRe Ways to cross-section a cube Learn about all the different ways we can obtain cross-sections of a cube. https://cdn.kastatic.org/ka-youtube-converted/aSokFEpoJFM.mp4/aSokFEpoJFM.mp4 443 2D vs. 3D objects https://www.khanacademy.org/math/geometry/hs-geo-solids/hs-geo-2d-vs-3d/e/cross-sections-of-3d-shapes 2024-06-02T19:30:57.262801945Z Cross sections of 3D objects Relate common 3D solids with their 2D cross-sections taken parallel, perpendicular, and diagonal relative to the base. Cameron Christensen exercise https://www.khanacademy.org/math/geometry/hs-geo-solids/hs-geo-2d-vs-3d/v/rotating-2d-shapes-in-3d 2021-05-05T14:53:24Z Rotating 2D shapes in 3D If you rotate a 2D shape about an axis, the shape will define a 3D object. Watch Sal rotating various 2D shapes and see what 3D objects he gets! video https://cdn.kastatic.org/googleusercontent/pRZb194RenTJ15sFyN93UFXDnwgELCAFDluzNa4_F2M3HzTsmxo9ykV7r4bEn90a_T_G-iC2qhmpreaJCTekF2NE1g Rotating 2D shapes in 3D If you rotate a 2D shape about an axis, the shape will define a 3D object. Watch Sal rotating various 2D shapes and see what 3D objects he gets! https://cdn.kastatic.org/ka-youtube-converted/vdpyWeiHXmU.mp4/vdpyWeiHXmU.mp4 252 2D vs. 3D objects https://www.khanacademy.org/math/geometry/hs-geo-solids/hs-geo-2d-vs-3d/e/rotate-2d-shapes-to-make-3d-objects 2026-03-25T17:50:39.459237602Z Rotate 2D shapes in 3D Visualize the 3D figure you could form by rotating a 2D figure around an axis. Cam exercise