# Solid Geometry

##### Video Lessons & Revision Notes

1. Lines and Planes
In this 37 mins Video Lesson
Concept of Direction Cosines, Direction Ratios, Distance between 2 points and DRs of line Joining them, Angle between Lines, Equation of a Line, Equation of a Plane, Angle between Planes, Prependicular distance from a point to a plane, and other topics.
2. Spheres : Part 1
In this 50 mins Video Lesson
Introduction to a Sphere, Equation of Sphere, Equation of Sphere with given end points of Diameter, Intersection of Plane and Sphere, Great Circle, Intersection of 2 Spheres, Sphere through a given Circle, and other topics.
3. Spheres : Part 2
In this 61 mins Video Lesson
Tangent Planes, Touching Spheres, Angle of Intersection of Spheres, Orthogonal Spheres, and other topics.
4. Cones : Part 1
In this 52 mins Video Lesson
Introduction to a Cone, Quadric Cone, Cone with Vertex at Origin, Cone with Vertex at Origin and Passing Through Coordinate Axes, Typical Problems on the mentioned concepts, and other topics.
5. Cones : Part 2
In this 34 mins Video Lesson
Right Circular Cone, RC cone with vertex at Origin and Z axis as the Axis, RC cone with a given vertex and axis, Typical Problems on the mentioned concepts, Enveloping Cone, and other topics.
6. Cylinders
In this 44 mins Video Lesson
Introduction to a Cylinder, Cylinder with a given conic as a guiding curve, Typical Problems on Cylinders, Right Circular Cylinder, RC Cylinder with a given radius and axis, Enveloping Cylinder, and other topics.

### Revision Notes

Cones (2.12 Mb)
Cylinders (1.59 Mb)
Spheres (2.37 Mb)

Introduction to Lines and Planes. Spheres, Cones and Cylinders