Pythagoras Blast From The Past

Page
2

Regular Solids

Measure the net of this Tetrahedron and find the surface area

Slide 11

One of the Pythagoreans’ most important discoveries was that the diagonal of the square is longer than its sides. This showed that irrational numbers existed (decimal numbers that never end).

a

b

c

a < c

b < c

3.1415927 .

2