What is Section formula And internal / external division formula

Section formula (internal + external)

Section Formula and explanation

Section formulae (Internal division)

Section formula (External division)

Section Formula and Related Questions

Section formula || Internal and external division || Important point OF internal and external division || Coordinates OF centroid OF triangle || In equilateral triangle

Section Formula|Questions

Derive the section formula for the internal division in three dimensions.

What is meant by an internal force & external force ?