A classroom setting displays a presentation on a whiteboard titled "Geometry of Folds"

A classroom setting displays a presentation on a whiteboard titled "Geometry of Folds". The text defines an anticline as a fold shaped like an arch with the oldest rocks in the center. Additionally, it indicates that the rock layers dip away from the hinge line, also known as the axis of the fold. A diagram illustrates an anticline, labeling key components such as the hinge lines, limbs, and the anticline structure itself. A figure, presumably a teacher, is present, holding a clipboard and pointing to the presentation.