While tooth decay is often the primary cause of a toothache, it's important for you to have a complete oral examination to determine the cause. Other causes of a toothache can include the following: 1  Infection. 2  Gum disease. 3  Grinding teeth (bruxism). 4  Tooth trauma. 5  An abnormal bite.
Thus the formal definition of corresponding sides can be stated as follows: In two or more different plane figures, the sides that are in the same position but in different plane figures are called corresponding sides.
The Rhombus. A rhombus is a four-sided shape where all sides have equal length. Also opposite sides are parallel and opposite angles are equal. Another interesting thing is that the diagonals (dashed lines in second figure) meet in the middle at a right angle.In other words they bisect (cut in half) each other at right angles. parallelogram has opposite sides parallel and equal in length. Also opposite angles are equal (angles a are the same, and angles b are the same). NOTE: Squares, Rectangles and Rhombuses are all Parallelograms!