the algebraic rule that tells you how each term is formed in an arithmetic sequence: common difference (d) = T2 – T1 = T3 – T2
states that if two events are independent, the chance of both events occurring is the product of...
a number which combined with its inverse results in the identity 1, e.g. 4 × ¼ = 1.
if the corresponding sides of two triangles are proportional, then the triangles are equi-...
points that lie on the same line (so that the gradient is the same at each point).