https://www.khanacademy.org/math/geometry/hs-geo-circles/hs-geo-circle-basics/v/language-and-notation-of-the-circle 2021-02-16T16:08:13Z Circles glossary Formal definition of a circle. Tangent and secant lines. Diameters and radii. major and minor arcs Sal Khan video https://cdn.kastatic.org/googleusercontent/SWae14xdpXW141daSvXpqUJZzzdAUuYNQ8-Zz-oWkTnYjVHewnV66scU53oFOzvcpEBnymxptuVTkmroZudMhhyh Circles glossary Formal definition of a circle. Tangent and secant lines. Diameters and radii. major and minor arcs https://cdn.kastatic.org/ka-youtube-converted/U2W7HPyC0cM.mp4/U2W7HPyC0cM.mp4 672 Circles, Symmetry and Mensuration 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 Circles, Symmetry and Mensuration https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-geometry-topic/geometric-solids/v/recognizing-common-3d-shapes 2023-09-15T04:55:18.07520004Z Recognizing common 3D shapes Learn about 3D shapes! A square pyramid has a square base. A rectangular prism is a box shape with all rectangular sides. A triangular prism has triangle faces on opposite sides. A sphere is like a globe. A cylinder looks like a can with circular faces on top and bottom. Shapes are fun! video https://cdn.kastatic.org/ka_thumbnails_cache/269d8dc9-c41f-45fa-9752-bac89194cc97_1280_720_base.png Recognizing common 3D shapes Learn about 3D shapes! A square pyramid has a square base. A rectangular prism is a box shape with all rectangular sides. A triangular prism has triangle faces on opposite sides. A sphere is like a globe. A cylinder looks like a can with circular faces on top and bottom. Shapes are fun! https://cdn.kastatic.org/ka-youtube-converted/tqxQSSzuXX0.mp4/tqxQSSzuXX0.mp4 209 Circles, Symmetry and Mensuration https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-geometry-topic/geometric-solids/v/counting-faces-and-edges-of-3d-shapes 2023-09-15T04:55:18.07520004Z Counting faces and edges of 3D shapes Learn about shapes! Discover how to count faces and edges on 3D figures. We explore a transparent shape with five faces and another shape, a square pyramid, with eight edges and five faces. It's a colorful journey into geometry! video https://cdn.kastatic.org/ka_thumbnails_cache/77a3d873-7311-4e5d-a95a-b315abb25791_1280_720_base.png Counting faces and edges of 3D shapes Learn about shapes! Discover how to count faces and edges on 3D figures. We explore a transparent shape with five faces and another shape, a square pyramid, with eight edges and five faces. It's a colorful journey into geometry! https://cdn.kastatic.org/ka-youtube-converted/_y17uHBwa_8.mp4/_y17uHBwa_8.mp4 227 Circles, Symmetry and Mensuration https://www.khanacademy.org/math/cc-fifth-grade-math/5th-volume/imp-finding-volume/v/volume-of-a-rectangular-prism-or-box-examples 2022-11-16T04:22:43.7414897Z Volume of a rectangular prism If you want to know how much stuff you can cram into a box, finding its volume is key. To calculate the volume of a box, you need to know its height, width, and depth. You can find the volume by multiplying these three dimensions together. This formula works regardless of the units you are using (e.g. meters, feet), he method is the same - just make sure your units match up! Sal Khan video https://cdn.kastatic.org/googleusercontent/trl4HROL5F5JhCgGZyneiSc0I7-KAv7V6EEwtZlyAkchGk-QJPBYUbp1sScM0eQ803NUaaK8zcMyXcRrm8bDb5G1 Volume of a rectangular prism If you want to know how much stuff you can cram into a box, finding its volume is key. To calculate the volume of a box, you need to know its height, width, and depth. You can find the volume by multiplying these three dimensions together. This formula works regardless of the units you are using (e.g. meters, feet), he method is the same - just make sure your units match up! https://cdn.kastatic.org/ka-youtube-converted/I9efKVtLCf4.mp4/I9efKVtLCf4.mp4 119 Circles, Symmetry and Mensuration https://www.khanacademy.org/math/revision-up-math-class-6/x362f281d7ea4c7a1:week-3-revision-up-math-class-6/x362f281d7ea4c7a1:circles-symmetry-and-mensuration-revision-up-class-6-math/e/revision-circles-and-symmetry-up-math-class-6 2026-04-08T00:54:09.631945657Z Revision Circles and Symmetry and Mensuration Practice problems for revision of Circles and Symmetry. Satya Swaroop exercise