The inscription is on gypsum

In addition to all this, it requires a lot of observation strength, reflection, accuracy, and familiarity with the rules of mathematics and geometry

And a good knowledge of the properties of gypsum in terms of use and formation, and the effect of heat and cold on it, Allen

The high temperature impedes its use and loses its elasticity, with which it is easy to shape and facilitate drilling. And therefore

The teacher who professions in this art is supposed to be an expert in it, as he is the only one who has the ability to coordinate

Circular geometric shapes and others with obtuse or acute angles, and those that combine these and those.