Be one of the first to ride the Atlanta Streetcar. The route runs in an East-West loop from the Historic Auburn Avenue to Centennial Olympic Park traveling on multiple streets with mixed traffic. The fare will be free for through the end of 2015.
 SSS  is when we know three sides of the triangle, and want to find the missing angles. To solve an SSS triangle: 1  use The Law of Cosines first to calculate one of the angles. 2  then use The Law of Cosines again to find another angle. 3  and finally use angles of a triangle add to 180Â° to find the last angle.
Theorem: An measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles. (non-adjacent interior angles may also be referred to as remote interior angles).t is always helpful to draw a diagram and label it with the given information. Then, using the first theorem above, set the exterior angle (x) equal to the sum of the two non-adjacent interior angles which are 45Â° and 72Â°. x = 45 + 72 x = 117. So, an exterior angle at P measures 117Â°.