It has exactly 4 sides.

The interior angles add to 360º

Opposite sides are parallel

Opposite sides are congruent (the same length).

Opposite angles are congruent (the same angle measure).

Consecutive angles are supplementary (add to 180º).

Diagonals bisect each other. (cut each other in half)

Diagonals are congruent.

Diagonals bisect opposite angles. (Cut opposite angles exactly in half)

Diagonals are perpendicular. (meet at right angles)

All angles are congruent.

All sides are congruent.

It has exactly 4 sides

The interior angles add to 360º

Opposite sides are parallel

Opposite sides are congruent (the same length).

Opposite angles are congruent (the same angle measure).

Consecutive angles are supplementary (add to 180º).

Diagonals bisect each other. (cut each other in half)

Diagonals are congruent.

Diagonals bisect opposite angles. (Cut opposite angles exactly in half)

Diagonals are perpendicular. (meet at right angles)

All angles are congruent.

All sides are congruent.

It has exactly 4 sides

The interior angles add to 360º

Opposite sides are parallel

Opposite sides are congruent (the same length).

Opposite angles are congruent (the same angle measure).

Consecutive angles are supplementary (add to 180º).

Diagonals bisect each other. (cut each other in half)

Diagonals are congruent.

Diagonals bisect opposite angles. (Cut opposite angles exactly in half)

Diagonals are perpendicular. (meet at right angles)

All angles are congruent. (all angles 90º)

All sides are congruent. (same length)

It has exactly 4 sides

The interior angles add to 360º

Opposite sides are parallel

Opposite sides are congruent (the same length).

Opposite angles are congruent (the same angle measure).

Consecutive angles are supplementary (add to 180º).

Diagonals bisect each other. (cut each other in half)

Diagonals are congruent.

Diagonals bisect opposite angles. (Cut opposite angles exactly in half)

Diagonals are perpendicular. (meet at right angles)

All angles are congruent.

All sides are congruent.

It has exactly 4 sides

The interior angles add to 360º

Opposite sides are parallel

Opposite sides are congruent (the same length).

Opposite angles are congruent (the same angle measure).

Consecutive angles are supplementary (add to 180º).

Diagonals bisect each other. (cut each other in half)

Diagonals are congruent.

Diagonals bisect opposite angles. (Cut opposite angles exactly in half)

Diagonals are perpendicular. (meet at right angles)

All angles are congruent.

All sides are congruent.

Parallelograms

Rectangles

Rhombi

Squares

Parallelograms

Rectangles

Rhombi

Squares