The book Al-Awfaq used in the science of the ten letters, which are the triangle, the square, and the pentagon

The book Al-Wafaq know that the orbit of the formation of letters is in the work of Al-Wafaq and singular and compound nouns

The book of conciliation is based on rules and ranks limited by a known number, and there is no defect or difference in terms of the ratio of orbits and the division of actions, and that concordance is equal in length and width, with no increase in its houses or subtraction multiplied by its length by its width, and that the number is present in all sides, length and width, with no increase or decrease, and when it differs One of the ribs was not correct and is invalid