In the 18th and 19th centuries, all three of these classical Greek problems were shown to be impossible, and the methods developed to address these problems were fundamental in the development of ...

d are real numbers a1x+b1y+c1=0 a2x+b2y+c2=0 Where a1, b1, c1, a2, b2, c2 are all real numbers and a12+ b12 ≠ 0, a22+ b22 ≠ 0 The nth term of AP = nth term = a + (n-1) d Sum of n terms in AP ...