Repliesmdbilalkhanspn (25)in euclidpostulates • 2 years agoRE: Why did Euclid prove his first four postulates? Why didn't he prove his fifth postulate (parallelism)?Good wishes and keep it up!steem.history (78)in arithmetic • 2 years agoRE: If x+6, 2x+1, and 4x-13 form an arithmetic sequence, what is x and the 9th term?Hello welcome to Steemit world! I'm @steem.history, who is steem witness. This is a recommended post for you. Newcomers Guide and The Complete Steemit Etiquette Guide (Revision 2.0) and…
