I need help with all 3 questions

This question awards 100 ! i really don’t want to fail i will also mark you !

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?

The fraction 7/9 is equivalent to a percent that is greater than 100%. truefalse