The triangles in the diagram are congruent. if mf = 40°, ma = 80°, and mg = 60°, what is mb?

a. 40 degrees
b. 60 degrees
c. 80 degrees
d. 100 degrees
e. 120 degrees

Adolphin is swimming with her friend. the dolphin jumps to a height of 4.54.54, point, 5 meters above the surface of the water as her friend swims 9.89.89, point, 8 meters directly below her. what is the position of the dolphin's friend relative to the surface of the water? meters