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# SQUARE CALCULATOR

# DEFINITION:

The square is:

-A polygon, that is a part of the plane bounded by a closed broken line;

-A regular polygon since it has 4 sides and 4 congruent angles;

-A parallelogram, i.e. a quadrilateral with opposite sides parallel.

# SIDES:

It has 4 congruent sides; the opposite sides are parallel; consecutive sides are perpendicular.

# DIAGONALS:

It has 2 equal and perpendicular diagonals: intersecting they divide in half; they are bisectors of the angles; divide the square into 4 congruent isosceles right triangles.

# ANGLES:

It has equal angles of 90 °; the sum of the internal and external angles is always 360 °.

# AXES OF SYMMETRY:

It has 4 axes of symmetry, two passing for the diagonals and two for the midpoints of the opposite sides.

# FORMULAS:

# AREA CALCULATOR:

A

d

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