Answer:
angle G is 45 degrees
Explanation:
all sides of a triangle add up to 180 degrees. looking at the triangle, the angles that we are provided are E and F. E is 90 degrees, and F is 45 degrees. If you add those together, we get 135. then, subtract 180 from 135, and you get your answer, which is 45 degrees.
also, it says on the smaller triangle in the bottom left.
hope this was helpful :D