In what areas of the real world do you see shapes being transformed to create other shapes?

The tiles below are pieces of a normal ecg tracing representing a little less than two heartbeats at a resting rate of 80 bpm. arrange the tiles in their correct order. rank from first to last. do not overlap any tiles.

Why did the ice arena get so hot after the big game (this is math related google it to find the paper

Reflect the point (7,0) across the y-axis