Is 1,200mm greater or less than 12m

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

answer: both chords and diameters have two endpoints on a circle. diameters must intersect the center of a circle.