Cone Shape
A cone is a solid object in 3-dimensions.
You wiil bo introduced to type of cone.
You will have learned what is axis of a cone and height of a cone.
You will be familiar to slant height of a cone; and the formula for the surface area and volume of a cone and how to apply it in real life.
It is easy to learn. You will enjoy it.
Cone
A cone is a solid object formed by the set of one of the following:
connected from a fixed point on a plane to all other points on the base of another plane. The fixed point is called the apex or vertex of the cone.
A Cone showing its vertex, base and curved surface.
Case 1: For lines, the cone can be extended infinitely in both directions from the apex and as a result, two cones are formed with a common vertex.
Case 2: For rays, the cone can be extended infinitely to the base from the apex.
Case 3: For line segments, the cone cannot be extended beyond the base.
Cone Example
Types of Cone
In general, there are two types of cone:
- right circular cone
- oblique circular cone
Right Circular Cone
A cone is said to be right circular if the perpendicular from the apex to the base passes through the center of the base.
Oblique Circular Cone
For a oblique circular cone, the perpendicular from the vertex to the base passes through the point other than center of the base.
Axis of Cone
The line segment (ray or line where applies) connected to the vertex and center of the base is called the axis of the cone.
Height of Cone
The perpendicular distance from the apex to the base is called the height of the cone.
A cube showing its faces and edges.
