A thombus is a special parallelogram.Which are true about a thombus that is not true about all parallelograms? A. diagonals create a right angle where they intersect B. all sides are congruent C. diagonals bisect vertex angles D. diagonals are congruent E. opposite angles are congruent

## Step 1<br />A rhombus is a special type of parallelogram where all sides are equal in length. This is a unique property of a rhombus that sets it apart from all parallelograms.<br /><br />## Step 2<br />Option A states that the diagonals create a right angle where they intersect. This is not true for all parallelograms, but it is true for a rhombus. In a rhombus, the diagonals are perpendicular to each other.<br /><br />## Step 3<br />Option B states that all sides are congruent. This is true for a rhombus, but it is not true for all parallelograms. In a parallelogram, only opposite sides are congruent.<br /><br />## Step 4<br />Option C states that the diagonals bisect vertex angles. This is not true for all parallelograms, but it is true for a rhombus. In a rhombus, the diagonals bisect the vertex angles.<br /><br />## Step 5<br />Option D states that the diagonals are congruent. This is not true for all parallelograms, but it is true for a rhombus. In a rhombus, the diagonals are congruent.<br /><br />## Step 6<br />Option E states that opposite angles are congruent. This is true for both a rhombus and a parallelogram. So, this is not a unique property of a rhombus.