Intersection of two lines - help!
I'm trying to build my own version of an intersect three planes document. When three planes intersect in a line though, my intersection command seems to break. I have defined three planes named, p, q, and r. Then I defined two lines of intersection as:
This produces two lines named g and h respectively. When the intersection of the three planes is a point, the command
correctly produces the point of intersection. But when the intersection of the three planes is a line, then the command
I've attached my file, since I know I'm not communicating this well. I'm pretty low skilled here, so I apologize in advance if this question is easily remedied.
p.s. I am using Geogebra Classic 5 on my laptop.