When symptoms occur, they often develop gradually, and may include: 1  Cough. 2  Fatigue, exhaustion, and light-headedness. 3  Rapid breathing.  Sensation of feeling the heart beat (palpitations) or a rapid 1  heartbeat. Shortness of breath that increases with activity and when lying down.
Yes, because a square is just a rhombus where the angles are all right angles. It is more common to call this shape a rhombus, but some people call it a rhomb or even a diamond.
A rhombus is a quadrilateral with all equal sides. It is also a parallelogram with all of the associated properties. A rhombus, however, also has additional properties. Theorem 52: The diagonals of a rhombus bisect opposite angles.