Geometry Textbooks I really do not think weak is a go term to use. Every body explains things differently try other texts by different authors. I have collected texts in the past and have found it good to try going through one text then checking another if it doesn't, click in my head. You may after a while decide the one your checking is better. I had 4 calculus texts. A Professor of Mathematics said he did the same. The past wording effects what you expect the words to mean. Who taught you is who you want to listen to. Confusing? Consult another text. Buy old used cheap texts and give it a try if you like.