No worries. Geometry is a particularly difficult subject to grasp as it's the point where you're phasing out of algebra and into obscure math. Honestly, I always received B's in my geometry class in eigth grade. It was difficult because new ideas were being thrown at me and I never completely understood them. Now, as a sophomore, I'm pulling in a strong A in Hon Pre-Calculus which is based heavily on trig and, yes, geometry And to counter your dad's way of thinking, my GPA is a 4.4. Just goes to show you that your current rate in geometry now does not dictate whether you are smart or stupid and it will not determine your future in math. Trust me, the occassional F does a person's self-motivation good. Being able to rise above the negativity is a sign of strength and enthusiasm - both of which I'm sure you possess. Bottom line - Cheer up!