# data[].attributes.body
Two pairs of congruent adjacent sides

Non-vertex angles are congruent

Vertex angles are bisected by a diagonal

Diagonals are perpendicular

Diagonal that connects vertex angles is the perpendicular bisector of the second diagonal

# data[].attributes.body
Two pairs of parallel sides

Opposite sides are congruent

Opposite angles are congruent

Consecutive angles are supplementary

Diagonals bisect each other

# data[].attributes.body
One pair of parallel sides - bases

Non-parallel sides are congruent

Consecutive angles between bases are supplementary

Base angles are congruent

Diagonals are congruent

# data[].attributes.body
- One pair of parallel sides
- Non-parallel sides are congruent
- Consecutive angles between bases are supplementary
- Base angles are congruent
- Diagonals are congruent

# data[].attributes.body
- Two pairs of parallel sides

- All four sides are congruent

- All four angles are right angles (thus, opposite angles are congruent and consecutive angles are supplementary)

- Diagonals are congruent

- Diagonals are perpendicular bisectors of each other

# data[].attributes.body
Two pairs of parallel sides

All four sides are congruent

Opposite angles are congruent

Consecutive angles are supplementary

Diagonals are perpendicular bisectors of each other

Diagonals are angle bisectors

# data[].attributes.body
-Two pairs of parallel sides

-Opposite sides are congruent

-All four angles are right angles

-Diagonals are congruent

-Diagonals bisect each other

# data[].attributes.body
a quadrilateral is a polygon with four edges and four vertices or corners

Area: ½ x diagonal x (sum of perpendicular heights)

Perimeter: sum of sides of the quadrilateral

Number of vertices: 4

Number of edges: 4

Internal angle: 90° (for square and rectangle)

Sum of interior angles: 360°