Through the definition, carefully analyze the characteristics of diamonds (that is, the nature of diamonds).

Master the "equilateral quadrilateral". This is a diamond.

Grasp that "quadrilateral diagonals bisect each other vertically" is a diamond.

Master "A square is a diamond, and diamonds are not all squares".

A diamond with an internal angle of 60 can be divided into two equilateral triangles.

Master that "parallelograms are not all diamonds, and diamonds are parallelograms".

Diamonds are rare in daily life. But there are many patterns based on diamonds. For example: