The "doughnut" shaped weather pattern that Homer is biting into is actually called a "cut-off" low pressure system, which is occurring about half way up in the atmosphere (~18,000ft). The round shape of the weather pattern is created by connecting lines of equal height along a constant pressure surface. Therefore, this entire map has the same pressure (in this case, 500mb), but consists of different heights above sea level. The lines that connect regions of equal height are called? (Apologies about the resolution. Maps like these are far more readable when Homer isn't added in). Cartoon3.jpg Group of answer choices Isoheights Isobars Isotach Isotherms