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Length of proof is 3.  Level of proof is 1.
 
---------------- PROOF ----------------
 
13 [] E(xa,xb,xa,xb).
57 [] xa=xb| -Col(xa,xb,xc)| -E(xa,xc,xa,xc1)| -E(xb,xc,xb,xc1)|xc=xc1.
174 [] M(xa,midpoint(xa,xb),xb).
203 [] xa=xb| -M(u,v,w)| -Col(xa,xb,u)| -Col(xa,xb,w)|Col(xa,xb,v).
216 [] xa=xb| -Col(xa,xb,midpoint(xp,xp1))|xp!=xp1|xp1=reflect(xa,xb,xp).
298 [] a!=b.
299 [] Col(a,b,p).
300 [] reflect(a,b,p)!=p.
534 [hyper,203,174,299,299,unit_del,298] Col(a,b,midpoint(p,p)).
637 [hyper,57,299,13,13,unit_del,298] p=p.
743 [para_into,300.1.1,216.4.2,unit_del,298] x!=p| -Col(a,b,midpoint(p,x))|p!=x.
746 [factor,743.1.3,unit_del,637,534] $F.

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