Notable products board

Function

Intended for experimental study, mathematics laboratory and carrying out mathematics experiments on: Mathematics. Algebra. The square notable product of the sum of two terms. Expressions, called notable products. The square notable product of the sum of two terms. The proof of the truth of the rule of the square remarkable product of the sum of two terms. The square notable product of the difference of two terms. The square notable product of the difference of two terms. The proof of the truth of the rule of the square notable product of the difference of two terms. Flat and metric geometry. Pythagoras theorem. Applying Pythagoras theorem to a right-angled triangle contained in a trigonometric circle with center O. Note the hypotenuse, the major and minor legs, etc.