The condition is thought to be caused by a combination of side effects of the drug (clenching and grinding of teeth, dry mouth) and lifestyle factors (infrequent oral hygiene, frequent consumption of sugary drinks), which may be present in long term users.
An Interior Angle is an angle inside a shape. Note: When we add up the Interior Angle and Exterior Angle we get a straight line, 180Â°. (See Supplementary Angles).
Interior Angles of a Triangle Rule. This may be one the most well known mathematical rule-The sum of all 3 interior angles in a triangle is 180Â°. As you can see from the picture below, if you add up all of the angles in a triangle the sum must equal 180Â°. This property of a triangle's interior angles is simply a specific example of the general rule for any polygon's interior angles.