https://hi.khanacademy.org/math/up-math-class-11/x808831787a7b08a2:conic-sections-ncert-new/x808831787a7b08a2:sections-of-a-cone/v/introduction-to-conic-sections 2021-05-28T04:27:51Z शंकु परिच्छेद (Conic sections) से परिचय Sal introduces the four conic sections and shows how they are derived by intersecting planes with cones in certain ways. Sal Khan video https://cdn.kastatic.org/googleusercontent/RPWgYvDzMuiAzmQiOD9YRcWvZHF0dwBjlAHDhulF1J_WJKAg_F2Y44b_iZC_03pWPmyEhYAqttYl3kM1qUcvhoLh शंकु परिच्छेद (Conic sections) से परिचय Sal introduces the four conic sections and shows how they are derived by intersecting planes with cones in certain ways. https://cdn.kastatic.org/ka-youtube-converted/ikzoI7K5q3o.mp4/ikzoI7K5q3o.mp4 658 किसी शंकु के परिच्छेद (Sections of a cone)