geometry
posted by BaileyBubble .
The sum of the measures of two exterior angles of a triangle is 264o. What is the measure of the third exterior angle?

ms sue can I have a link to help me on this? or any suggestions?

The sum of exterior angles of all polygons (including triangles) is 360°
Can you find the third exterior angle? 
THANK YOU SO MUCH!!! :) YOU SAVED ME FROM BOMBING THIS ASSINMENT!