: Includes classical theorems on congruence, similarity, and the geometry of triangles (e.g., Menelaus and Ceva).
: Real number sets, algebraic identities, systems of equations, and elementary inequalities. An Excursion through Elementary Mathematics, Vo...
: Divisibility, prime numbers, Diophantine equations (including Pell’s equation), and congruence classes. : Includes classical theorems on congruence, similarity, and