Lesson 8
1. Lesson 8
1.7. Explore 4
Module 2: Logic and Geometry
Lesson Assignment
© Hocoma. Reproduced with permission.
If the lines in a design or final product are not parallel but are supposed to be, the design or final product has to be adapted or changed. Think about the consequences of a set of parallel bars used to help rehabilitate a patient that have not been setup parallel. It is crucial that the bars are actually parallel to one another. The safety of the patients depends on it.
Barbara is an occupational therapist. One of her responsibilities is to ensure that the parallel bars used by patients are actually parallel. Her preferred strategy is to lay a metre-stick across the top of the bars. She then measures some of the angles formed when the metre-stick intersects the bars. Barbara checks for accuracy by moving the metre-stick to a different position and having it intersect the bars at a different angle. A sketch of her measurements is shown.
Barbara believes that, based on her angle measurements, the bars are parallel to one another.