 reserve n for Nat;

theorem ThConv7:
  for a,b being Point of TarskiEuclid2Space holds
    between a,a,b & between a,b,b
  proof
    let a,b be Point of TarskiEuclid2Space;
    Tn2TR a in LSeg(Tn2TR a,Tn2TR b) by RLTOPSP1:68;
    hence between a,a,b by ThConv6;
    Tn2TR b in LSeg(Tn2TR a,Tn2TR b) by RLTOPSP1:68;
    hence between a,b,b by ThConv6;
end;
