Euclid of Alexandria is known as the father of modern geometry.
B: ray
Rays are a linear formation that start at a point and continue forever in a direction. The photo shows a point on one end, and an arrow on the other indicating that it starts at the point and continues forever past the arrow.
Divide total number of students by number of teachers:
Elmwood: 576 students / 24 teachers = 24 students per teacher.
Savory: 638 students / 29 teachers = 22 students per teacher.
Savory has the lowest students per teacher rate.