ˆ
ˆ
ˆ
ˆ
ˆ
ˆ
ˆ
ˆ
[
(2
5
3 )] [( 4
8
8 )
(3
2 )]
0
r
i
j
k
i
j
k
i
j
− + − ⋅ − − + × − =
r
R 
S  
T
© NCERT
not to be republished
THREE D IMENSIONAL G EOMETRY
485
11 6 4  Intercept form of the equation of a plane
In this section, we shall deduce the equation of a plane in terms of the intercepts made
by the plane on the coordinate axes Let the equation of the plane be
Ax + By + Cz + D = 0  (D ≠ 0)