Stage 20 · Coordinates & First Functions

20.3.1 A Quick Look Back at Similar Figures

20.3 Similarity and Scaling in Coordinates

Point 1 of 4

20.3.1 A Quick Look Back at Similar Figures

Core idea

A copier blowing up a photo keeps the shape the same and only changes the size, with matching sides all sharing one ratio.

Module goal. Use whole-plane scaling to understand enlarging and shrinking a shape, and see clearly what multiplying by a ratio means geometrically
eastmath.com · 20.3 Similarity and Scaling in Coordinates · 20.3.1 A Quick Look Back at Similar Figures