You are not logged in.
Pages: 1
I have tried two approaches:
1) used the built in function in Geogebra for creating a parabola (specify point and line). Then made a random line and tried to intersect it. Worked fine.
2) built my own parabola using a Focus, Directrix, then a point on the directrix, and an isosceles triangle. The point on the directrix then drove a Locus which gave me a parabola. I might call this the "From Scratch" approach.
BUT when I try to intersect a random straight line with it, and am asked to select 2 objects, the parabola is simply not recognized and things fall flat.
So perhaps there is something lacking about a Locus that makes it impossible for the software to find the point of intersection.
thank you!
John
Gentlemen: thanks so much! I will do some experimenting today.
Bob: that was exactly what I expected to happen.
John
hi!
I am new to Geogebra.
I have created a parabola in Classic - - locus of points equidistant from a Focus and Directrix. Works fine.
I have a line that I would like to find the intersection of with the parabola. I select the line and parabola and . . . nothing happens.
What am I doing wrong?
Pages: 1