Answer:
a. A point
b. Obtuse angle
c. A line segment
d. 180 degrees
e. A ray
f. An acute angle
g. 90 degrees
Explanation:
a. A point (a place on a plane that has no dimension)
b. Obtuse angle (any angle over 90 degrees)
c. A line segment (a part of a line)
d. 180 degrees (The angle of a line or line segment)
e. A ray (a line segment with one end extending forever)
f. An acute angle (Any angle under 90 degrees)
g. 90 degrees (the pole is perpendicular to the ground)