ASN Special Parallelograms

True only when a rhombus is also a rectangle

AKA a square

In a rhombus, all sides are congruent.

In a rhombus, the diagonals are always $$\perp$$  . They are only $$\cong$$   when the rhombus is also a rectangle, AKA a square.

In a rectangle, all angles are right angles and so all angles are congruent.

A square is a rectangle with a=b

The diagonals of a rectangle are always congruent because a rectangle is also an isosceles trapezoid.

The square is inside the rhombus circle.

Some rectangles are not in the square circle.

A rectangle is also an isosceles trapezoid.

A square is both a rhombus (one opposite pair of angles are bisected) and a rectangle (all angles are congruent).