Question 3(b):
Draw any circle and mark: A radius.
The radius is a line segment that connects the centre of a circle to a point on the circle.
Here OP is the radius of the circle.
Question 3(c):
Draw any circle and mark: A diameter.
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