Press the recycle icon (upper right corner) in the app above. Then slide the [b]Slide Me![/b] slider again slowly all the way to the right. [br][br]In this app, suppose one colored angle measures [math]120^\circ[/math]. Suppose the other colored angle measures [math]25^\circ[/math]. What would the measure of the 3rd (non-colored) angle be in each triangle?

How are the two triangles above [b]similar[/b]? How are they [b]different[/b]?