Kevin and Ann Pike of Hinsdale, N.H., and Gary and Margaret Winn of West Chesterfield, N.H., announce the engagement of their children, Sarah Anne Pike and Alexander Wayne Winn. The bride-to-be is a graduate of Hinsdale High School and New Hampshire Technical Institute. She is a dental hygienist with Raynor Dental in Keene, N.H. Her fiancé is a graduate of Keene High School and Baran Institute of Technology. He is employed by Twin State Truck Service in Chesterfield as a diesel mechanic. The wedding is planned for the fall of 2014.