List of top Mathematics Questions on introduction to three dimensional geometry asked in KCET

The number of diagonals that can be drawn in an octagon is:
If the 4th, 10th, and 16th terms of a G.P. are \(x\), \(y\), and \(z\) respectively, then
The equation of the line through the point \( (0, 1, 2) \) and perpendicular to the line \[ \frac{x - 1}{2} = \frac{y + 1}{3} = \frac{z - 1}{-2} \] is:
Reflection of the point $( a , ? , ? )$ in $XY$ plane is
The perpendicular distance of the point ${P(6,7,8)}$ from $XY$-plane is
The equation xy = 0 in three-dimensional space represents