3d Geometry Class 11| CBSE Maths 3 Dimensional Geometry

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In this video, we are going to cover the following topics:-What is 3D Geometry ,3D Space-Coordinate plane in 3D space-Octants coordinate table-15.13 Ex 1: Find the octant in which the points (4, 2, -5) and (-4, 2, -5) lie-17.33 Ex 2: A point is on the x-axis. What are its y-coordinate and z-coordinate?-19.18 Ex 3: A point is in tne XZ-plane. WHat can you say about its y-coordinate? -DIstance Formula-22.05 Ex: Find the distance between the points (-3, 7, 2) and (2, 4, -1) -23.06 Q.1: Show that the points P(-2, 3, 5), Q(1, 2, 3) and R(7, 0, -1) are collinear. -26.39 Q.2: Verify that (0, 7, -10), (1, 6, -6) and (4, 9, -6) are the vertices of an isosceles triangle. -Section formula-Internal-Internal Vs External division of a line segment-Section formula-External-33.54 Q.1: Find the coordinates of the point which divides the line segment joining the points (-2, 3, 5) and (1, -4, 6) in the ratio (i) 2 : 3 internally (ii) 2 : 3 externally.-34.57 Q.2 Find the ratio in which the YZ-plane divides the line segment formed by joining the points (-2, 4, 7) and (3, -5, 8).

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