GELE Geodesy — Geodetic and Cartesian CoordinatesSlides
Revision slides for GELE Geodesy — Geodetic and Cartesian Coordinates. Structured for quick scanning, with one idea per slide and the key formulas called out clearly. Good for the final week before the GELE 2026 when you want to refresh the whole chapter in under an hour.
Exam context
Professional Regulation Commission (PRC) — Board of Geodetic Engineering runs the Geodetic Engineer Licensure Examination on September 2026. Its Geodesy section sits under a "Core" weighting, and Geodetic and Cartesian Coordinates is the 3rd chapter in the 6-chapter GELE Geodesy rotation. The GELE passing mark is 70% weighted average, no sub-test below 50%, and the most recent 2026 paper drew about a meaningful share of questions from Geodesy.
Geodetic and Cartesian Coordinates - Slides
Slides
Introduction to Coordinate Systems in Geodesy
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S1
The Reference Ellipsoid and Key Parameters
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S2
Forward Conversion: Geodetic to Cartesian—Theory
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S3
Forward Conversion: Worked Example (Manila, WGS84)
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S4
Inverse Conversion: Cartesian to Geodetic—Theory
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S5
Longitude Quadrant Resolution—Critical Detail
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S6
Inverse Conversion: Latitude and Height Iteration
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S7
Inverse Conversion: Worked Example (Reverse of S4)
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S8
Ellipsoidal Height vs. Orthometric Height
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S9
PRS92 and Philippine Coordinate Systems
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S10
PPCS and UTM Projection—Brief Review
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S11
Forward and Inverse Conversion—Two-Coordinate Chain
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S12
Common Exam Pitfalls and How to Avoid Them
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S13
Numerical Precision and Convergence Criteria
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S14
Software Implementation and Quality Assurance
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S15
Summary and Key Takeaways
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S16
Review Questions for Self-Assessment
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S17
Additional Resources and References
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S18
Stored In
chapter_slides
Slide Count
18
Summary Only
true
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