 Summer of '69  is a song recorded by Canadian recording artist Bryan Adams, from his fourth studio album, Reckless (1984). The song was written by Adams and Jim Vallance, a long-time writing partner of Adams.
â¢ UNDULATION (noun). The noun UNDULATION has 3 senses: 1. an undulating curve. 2. wavelike motion; a gentle rising and falling in the manner of waves. 3. (physics) a movement up and down or back and forth. Familiarity information: UNDULATION used as a noun is uncommon.
The Undefined Terms in Geometry. The 3 undefined terms in geometry are the building blocks for the rest of the subject. They are like the big cinder blocks that are first placed at the bottom of a house - without those blocks, the rest of the house couldn't be built. The 3 terms are point, line, and plane. Do not be intimidated by the the phrase undefined..