3.3.18 Line and plane in space
Condition: In a triangle with vertices \( A(1,-1,2) \), \( B(5,-6,2) \) and \( C(1,3,-1) \) find the height \( h=B D \).
Straight lines and planes in space. Intersection of lines and planes, calculation of the distance of a line and a plane, angles between lines and planes, finding equations of lines and planes in space, and much more.