**1. **** ****A pattern formed by two straight edges, one lying horizontally and the other standing vertically****.**

**2. A****n edge that has the direction of a free hanging plumb line with the horizon as a backdrop.**

**3. ****Any vertical line such as the stem of the letters T and L**** which crosses a horizontal line****.**

**Synonym: orthogonal.**

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**Copyright © by ****Nila**** Gaede 200****8**