Direct and indirect methods of proof. The Lehmus-Steiner theorem
classification
🧮 math.HO
keywords
directindirectproofgivenlehmus-steinermethodsproofstheorem
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In the paper different kinds of proof of a given statement are discussed. Detailed descriptions of direct and indirect methods of proof are given. Logical models illustrate the essence of specific types of indirect proofs. Direct proofs of Lehmus-Steiner's Theorem are proposed.
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