https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:lines-and-angles/x04ca845a9a148c80:point-line-segment-line-and-ray/v/basic-geometrical-terms 2024-04-23T15:47:45.605693116Z Basic Geometrical terms In this video we define what is point, segment, line , ray and other basic geometrical terms. Devashish Phadnis video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Basic Geometrical terms In this video we define what is point, segment, line , ray and other basic geometrical terms. https://cdn.kastatic.org/ka-youtube-converted/QmL-O07QLG4.mp4/QmL-O07QLG4.mp4 391 Lines and angles https://www.khanacademy.org/math/cc-fourth-grade-math/plane-figures/imp-angle-introduction/v/naming-angles 2021-06-30T20:49:37Z Naming angles Sal names angles based on their vertex and endpoints. Sal Khan video https://cdn.kastatic.org/googleusercontent/NdvW6uOwIsTqM-ULzK_B1Le10viMa6aceiPx5uB2HYh1vRL5_xmuE7N_LLDXH6bo_OFW2VF5AKPso7B5bQeNpsnp Naming angles Sal names angles based on their vertex and endpoints. https://cdn.kastatic.org/ka-youtube-converted/6vRgqB0PSXE.mp4/6vRgqB0PSXE.mp4 71 Lines and angles https://www.khanacademy.org/math/cc-fourth-grade-math/imp-geometry-2/imp-measuring-angles/v/measuring-angles-in-degrees 2021-06-30T20:49:32Z Measuring angles in degrees Learn how to measure an angle with a protractor.   Sal Khan video https://cdn.kastatic.org/googleusercontent/AUN8zIwamVCnRbVrbNkTeBO9SpKe7AxHlEaNRb5uRVice-wM0qmnW-YuL_KiAeC99oc3B1LtSsEEtRXjOhR3PGg5 Measuring angles in degrees Learn how to measure an angle with a protractor.   https://cdn.kastatic.org/ka-youtube-converted/92aLiyeQj0w.mp4/92aLiyeQj0w.mp4 502 Lines and angles https://www.khanacademy.org/math/cc-fourth-grade-math/imp-geometry-2/imp-measuring-angles/v/using-a-protractor 2021-06-30T20:49:34Z Measuring angles using a protractor Learn to use a virtual protractor to measure angles. Sal Khan video https://cdn.kastatic.org/googleusercontent/fl9JqzAG4AES6K4YGfp4Aj6oDVKRNlLOERnZGNV26NZUICj8syJjkPPaVF371GWAEtBEhbQP1aiI3FbboRuvrd_Htw Measuring angles using a protractor Learn to use a virtual protractor to measure angles. https://cdn.kastatic.org/ka-youtube-converted/dw41PMWek6U.mp4/dw41PMWek6U.mp4 205 Lines and angles https://www.khanacademy.org/math/cc-fourth-grade-math/imp-geometry-2/imp-measuring-angles/v/constructing-angles 2021-06-30T20:49:26Z Constructing angles Sal uses a protractor to create 10° and 155° angles. Sal Khan video https://cdn.kastatic.org/googleusercontent/vwVwXCac9YgvLk2XcKJT3VMMic41xJrnL_cSRhc7GfLJMxBO7vEbB34DX_PFBiUjWTi0-B7_cDHbykrQLYrmEYY Constructing angles Sal uses a protractor to create 10° and 155° angles. https://cdn.kastatic.org/ka-youtube-converted/QmfoIvgIVlE.mp4/QmfoIvgIVlE.mp4 161 Lines and angles https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:lines-and-angles/x04ca845a9a148c80:types-of-angles-and-their-measures/v/acute-obtuse-and-reflex-angles 2024-05-22T06:22:00.374380016Z Acute, Obtuse and Reflex angles Learn about Acute , obtuse and reflex angles introduction Devashish Phadnis video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Acute, Obtuse and Reflex angles Learn about Acute , obtuse and reflex angles introduction https://cdn.kastatic.org/ka-youtube-converted/Jj8XhAb1-zA.mp4/Jj8XhAb1-zA.mp4 208 Lines and angles https://www.khanacademy.org/math/kn-revision-class-6-math/x054680bf0d7836c8:week-1/x054680bf0d7836c8:lines-and-angles/e/lines-and-angles-revision 2026-04-08T00:16:02.937952483Z Lines and angles revision . Devashish Phadnis exercise