GELE Photogrammetry & Cartography — Map ProjectionsSlides
Slide library for Map Projections. Every GELE Photogrammetry & Cartography concept in this chapter, broken into bite-sized slides that are easy to scan on mobile. Built around Professional Regulation Commission (PRC) — Board of Geodetic Engineering's recent question patterns for the GELE 2026.
Exam context
Professional Regulation Commission (PRC) — Board of Geodetic Engineering runs the Geodetic Engineer Licensure Examination on September 2026. Its Photogrammetry & Cartography section sits under a "Core" weighting, and Map Projections is the 4th chapter in the 6-chapter GELE Photogrammetry & Cartography 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 Photogrammetry & Cartography.
Map Projections - Slides
Slides
Introduction to Map Projections
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S1
Classification by Developable Surface
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S2
Projection Properties: What Gets Preserved?
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S3
Scale Factor: Definition and Significance
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S4
Worked Example 1: Computing Grid Distance from Scale Factor
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S5
Worked Example 2: Computing Ellipsoidal Distance from Grid Distance
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S6
Why Transverse Mercator for Surveying?
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S7
The Philippine Plane Coordinate System (PPCS)
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S8
UTM and Global Transverse Mercator System
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S9
Worked Example 3: Scale Factor in UTM Zone 51
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S10
Projection Distortion Limits and Practical Bounds
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S11
Comparing PPCS and UTM: Similarities and Differences
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S12
Worked Example 4: Choosing the Right Projection
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S13
Common Pitfalls and Exam Misconceptions
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S14
Summary and Key Takeaways
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S15
Practice Problems for Self-Assessment
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S16
Stored In
chapter_slides
Slide Count
16
Summary Only
true
Previous chapter
Stereoscopy, DEM and Orthophoto
Next chapter
Philippine Plane Coordinate System and UTM
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