Which mathematician is not known as a contributor to projective geometry?

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

Asequence {an} is defined recursively, with a1 = 1, a2 = 2 and, for n > 2, an = an-1 an-2 . find the term a241. a) 0 b) 1 c) 2 d) 1 2

What is the location of point g, which partitions the directed line segment from d to f into a 5: 4 ratio? –1 0 2 3