On the same plane, a set of parallelograms with equal adjacent sides is a rhombus, and a quadrilateral with equal four sides is a rhombus, and the diagonal of the rhombus is vertically bisected and bisected by each set of diagonal lines. A diamond is an axisymmetric figure with two symmetrical axes, that is, the straight lines where the two diagonals are located, and a diamond is a figure with central symmetry.

nature

On the plane, a set of parallelograms with equal adjacent sides is a diamond.

Nature:

A diamond has all the characteristics of a parallelogram;

All four sides of the diamond are equal;

The diagonal of the diamond is divided vertically and divided equally by each diagonal group;

A diamond is an axisymmetric figure with two axes of symmetry, that is, the straight lines where the two diagonals are located.

decision

On the same plane,

A set of parallelograms with equal adjacent sides is a diamond;

Parallelograms with diagonal lines perpendicular to each other are rhombic;

A quadrilateral with four equilateral sides is a diamond;

A quadrilateral with diagonal lines bisecting each other vertically;

Two diagonal lines bisect each diagonal quadrilateral;

A parallelogram with a diagonal bisecting an internal angle;

A diamond is defined on the premise of a parallelogram. The first is a parallelogram, and it is a special parallelogram. The special feature is that "a group of adjacent edges are equal", which adds some special properties and judgment methods.