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Prepared by: Mahmoud Steve Presented by: Amr Abdeen Edited by: Ehab Essam Supervised by: Mohamed Osama To follow Amr Abdeen's channel / amrabdeen / ibnabdeen / ibnabdeen / amribnabdeen ------------------------------------------------- To follow Midnight Questions channel / @noselleel / noselleelfb / noselleel ------------------------------------------------- To follow Randomness channel / @3shwa2yattv / 3shwa2yattv / 3shwa2yattv #amrabdeen #amr_abdeen #Amr_Abdeen 00:00 Introduction 00:41 What is the benefit of the rails? 1:47 The road is not always a straight line 2:59 What is the solution? 4:34 Conical geometry 5:59 The inner lip 6:35 What is the benefit of the rails? 7:10 The flying train