https://hi.khanacademy.org/math/up-math-class-11/x808831787a7b08a2:introduction-to-three-dimensional-geometry-ncert-new/x808831787a7b08a2:untitled-1053/v/introduction-to-3d 2025-06-25T04:36:24.163902917Z 3D का परिचय In this video, we try to understand the 3D world a little better. We start by breaking down what we mean by the word 'dimension' in math. We take a few examples from 0D to 3D to understand the differences. We then talk about axes - and how they keep increasing as we move up in higher dimensions. These axes divide the planes into 4 quadrants and space into 8 octants. We learn the conventions for signs of coordinates in these octants. We then practice problems on basics of 3D. Desmos link for the animations used in the video: https://www.desmos.com/3d/4djcxekbnr Ashish Gupta video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw 3D का परिचय In this video, we try to understand the 3D world a little better. We start by breaking down what we mean by the word 'dimension' in math. We take a few examples from 0D to 3D to understand the differences. We then talk about axes - and how they keep increasing as we move up in higher dimensions. These axes divide the planes into 4 quadrants and space into 8 octants. We learn the conventions for signs of coordinates in these octants. We then practice problems on basics of 3D. Desmos link for the animations used in the video: https://www.desmos.com/3d/4djcxekbnr https://cdn.kastatic.org/ka-youtube-converted/454U8SoptN8.mp4/454U8SoptN8.mp4 882 अंतरिक्ष में एक बिंदु के निर्देशांक (Coordinates of a point in space) https://hi.khanacademy.org/math/up-math-class-11/x808831787a7b08a2:introduction-to-three-dimensional-geometry-ncert-new/x808831787a7b08a2:untitled-1053/e/coordinates-of-a-point-in-space 2026-04-08T08:46:38.570038857Z अंतरिक्ष में एक बिंदु के निर्देशांक (Coordinates of a point in space) कक्षा 11, 3D अध्याय के लिए पहला अभ्यास| exercise