The pelvis was fun to study this morning! From the bottom of the ribs, draw the same four sternum boxes. The top of the pelvis (the iliac bones) takes up the bottom half of the top boxes. Then, in the bottom two boxes, construct two triangles. The top triangle sets up the sacrum at the end of the spine and the bottom triangle sets up the pubic area. That's all I really remember from the study. I'll probably study it again in a week or two.