I recently bought a TI-nspire CX calculator. I've found all kinds of useful help on how to manipulate geometric shapes in a graphing document or the scratchpad. However, I haven't had any success in learning how to create or graph basic shapes myself. I'd appreciate help on how to plot a single point, to create a line segment, and graph a triangle. No doubt, I'll be embarrassed at how obvious or simple this really is, but I've spent so much time reading documentation and searching online that I just have to break down and ask for help. Thanks in advance - Jeff.