1. Introduction
In Lesson 1, rt 90 made square corners. What changes when the walk stays the same but the turn gets sharper?
Compare the paths first. Afterward, the pattern has a useful explanation: turns around a regular closed shape total 360°, so each exterior turn is 360 ÷ sides.
rt 90Square cornerA quarter turn — used for squares and stairs.
rt 180Half turnFaces the opposite way. Useful for zigzags and bounce-backs.
rt 270Three-quarter turnSame facing as lt 90, but turning the long way with rt.
rt 60Hexagon corner360 ÷ 6 = 60. Six of these make a hexagon.