If ∠F and ∠G are complementary angles and ∠F is 26°, what is the measure of ∠G?

Complementary = two angles sum to 90 degrees

Supplementary = two angles sum to 180 degrees

So, angle F + angle G = 90 degrees; angle F is 26 degrees:

26 degrees + angle G = 90 degrees

angle G = 90 degrees - 26 degrees

angle G = 64 degrees