I was placed in modified math classes throughout most of the high school years based on my poor academic background. I will not go into detail here. Based on this situation, I never took regular math classes in high school. Thus, I never learned direct and indirect geometric proofs using the Statement versus Reason chart. Does any here know the best way to learn geometric proofs at the high school level? I graduated from high school in 1984. By graduated I mean, I was promoted from grade to grade without having earned the promotion, which is very common in NYC public schools.