Triangulation

Roger Doofenshmirtz, we know is six feet and two inches tall

And the beam that hit him left a weird impression on that wall

So I took the angle from that point of where I knew he stood,

And I found the building just like that because I understood

Triangulation!

That's how I figured it out

Triangulation!

Now I'm left with no doubt

The only geometric process using data I possess

That could pinpoint the conclusion of my scientific quest

Triangulation!

Cha cha cha!