Assumptions and Estimation
Summary
Understanding how to interpret figures on the GMAT is crucial for avoiding traps and making accurate deductions.
- Lines that appear straight in GMAT figures are indeed straight, which is a reliable assumption test-takers can make.
- Assumptions about lengths, angles, parallelism, or perpendicularity based solely on appearance are unreliable and should be avoided.
- Figures on the GMAT may not be drawn to scale, emphasizing the importance of not trusting the visual representation for making geometric deductions.
- Reliable deductions must be based on explicit information provided in the text of the problem or within the figure itself.
- Logical deductions based on the rules of geometry are the only trustworthy method to determine the properties of figures on the GMAT.
Chapters
00:08
The Reliability of Straight Lines
00:59
The Pitfalls of Assumptions
02:33
Figures Not Drawn to Scale
04:29
Trusting Text Over Visuals
05:23
Making Logical Deductions
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