[Fast Method to Remember Rules] GMAT Math Prep: Geometry - Videos

There’s another source of information which is unique to geometry: that is the figure which often appears next to the question.
These figures may add certain information that we don’t find in the text. When observing the figure, it is important to know that in the test:
■ If a line segment looks straight – it is straight.
■ If lines, curves, or edges appear to have a vertex – that is, to meet – they do!
On the other hand, there is information in the figures which we cannot trust, such as the length of the line segments and the size of angles, so:
■ an angle which looks obtuse can be acute! The calculation might show it.
■ A line segment which looks short can be long – again, it’s all in the numbers.

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