This collection of theorems in plane geometry, some of which we believe to be new, illustrates that there may still be plenty of interesting theorems awaiting discovery. We derived a lot of enjoyment from evolving them (or, as it transpired in some cases, rediscovering them) and it is our sincere hope that the reader may derive as much pleasure from reading about them. We have included a rather more generous proportion of diagrams than is strictly necessary, principally, of course, to assist the reader in following the proofs, but partly, too, for their beauty of design, which we have found to have an appeal to many of our friends who are not mathematicians.