In exercises 1-8, use the diagram.
1. give two other names for ab.
2. name three points that are collinear.
3. give another name for plane f.
4. name a point that is not coplanar with a, b, and e.
5. give another name for cd.
6. name three rays with endpoint b.
7. name a pair of opposite rays.
8. give another name for cd.

northern hill zone (nhz)

western himalayan regions of j& k (except jammu and kathua distt.); h.p. (except una and paonta valley); uttaranchal (except tarai area); sikkim and hills of west bengal and n.e. states

north western plains zone (nwpz)

punjab, haryana, delhi, rajasthan (except kota and udaipur divisions) and western up (except jhansi division), parts of j& k (jammu and kathua distt.) and parts of hp (una dist. and paonta valley) and uttaranchal (tarai region)