A two column proof is a method to prove statements using
properties that justify each step. The properties are called
reasons. All reasons used have been showed in previously algebra
courses. We will in the following video lesson show how to prove
that x=-½ using the two column proof method.
The ruler postulate tells us that two points on a line can be
paired with real numbers so that, given any two points A and B, A
is zero and B is a positive real number.
Further on the segment addition postulate tells us that if a
point B is somewhere between point A and point C then AB + BC =
similar relationship is the angle addition postulate. If we have
the following angls:
Video lesson: Solve the following algebraic
equation using logic