Chapter 1 Summary

This chapter is mostly about how to use components from bricks to TECHNIC liftarms, properly without confuse. It is essential to know basic concepts of the mathematical relations of those components for complex designs and applications. The LEGO system is based on the metric system and each of the components has its certain ratio of length and height. The most important and basic concept is that the proportion of height and length of the LEGO brick is the ratio 6:5 . In addition, the height of the brick is same as the height of the stack of three plates.
As further experiments go on, sometimes it is needed to build up frames and what makes them more stable is diagonal bracing. To measure the diagonal length to be able to fit in precisely, the Pythagorean theorm is used, which is basically a formula about the relations of the sides in a right-angled triangle. a^2+b^2=c^3(c is hypotenuse) It useful examples are 3:4:5, 15:8:17, 5:12:13 and so on.
Lastly, liftarm bracing with TECHNIC liftarms is illustrated explaining the advantages of using the TECHNIC liftarms, which were newly introduced to complement scant diversity of applications in the past.