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3D Geometry in one weekend

Lines, planes and shortest distance, in the order that makes the most sense.

Karan Mittal Β· IIT Delhi alumnus
3 Sept 2026 Β· 8 min read

3D Geometry rewards a clear order: direction ratios, then lines, then planes, then distances. Do it in that order and it fits in a weekend.

Chapter3D Geometry
#Vectors & 3D#3D Geometry
Written by
Karan Mittal

Karan bhaiya is an IIT Delhi alumnus (B.Tech, Civil Engineering, 2023). After cracking JEE himself, he has mentored 1,000+ students and has worked as a project manager building products. At Mathflex, he teaches JEE maths chapter by chapter, the way he wishes he had learned it.

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