Question 3(c):
Draw any circle and mark: A diameter.
A diameter of a circle is a line segment that passes through the centre of the circle and whose endpoints lie on the circle.
Here, AB is the diameter of the circle.
Question 3(b):
Draw any circle and mark: A radius.
Question 3(a):
Draw any circle and mark: Its centre
Question 3(e):
Draw any circle and mark:
A segment
Question 3(h):
an arc
Question 3(g):
a point in its exterior