Proof of Thales’s Theorem that the diameter of a circle always subtends a right angle to any point on the circle (15.3 MB)
Proof C = Proof 1
Euclid’s Proof that there are infinitely many primes (6.2 MB)
Proof D = Proof 5
Algorithm for finding the highest common factor of two numbers (9.5 MB)
Proof E = Proof 2
Proof that the square root of 2 is irrational (17.8 MB)
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