4, 4

4, 5

5, 4

4, 6

a triangle

a point

two lines

a straight line

parallel to OA

perpendicular to OA

at 45° to OA

along AO

the mass of two are same

e.g. of two coincides

M.I. of two about an axis through e.g. is equal

all of the above

joining the corresponding points

perpendicular to line as per (a)

not possible to determine with these data

at 45° to line as per (a)