But the math? That is delectable ... which means it’s divisible by the number of divisors it has. To take a simpler example, think of 18: it has six divisors – 1, 2, 3, 6, 9, and 18 ...

Circle theorems are used in geometric proofs and to calculate angles. Transformations - Edexcel Transformations change the size or position of shapes. Congruent shapes are identical, but may be ...