We can relate the Three dimensional geometry to that of the Two dimensional Co-ordinate geometry to understand it easily.
In Two dimensional geometry we have the x axis and the y axis.
Whereas in Three dimensional geometry we have the third axis which is the z-axis.
“An object that has height width and depth”-eg: Cuboid
The definition of the 2D geometry is:
“An object that has only two dimensions” (ie) Width and Height eg: Rectangle
ð All the formulae related to three dimensional geometry are similar to that of the formulae related to two dimensional geometry, except that it has an extra
‘z’ co-ordinate.
ð We can relate the three dimensional figure to the respective two dimensional one and hence arrive at the formula.
For Example:
The cuboids can be related to that of a rectangle, a cube to that of a square and sphere to that of a circle.
For Example:
Here arecouple of examples on clay6 based on the above tip
https://clay6.com/qa/2500
https://clay6.com/qa/11627
