- Books Name
- CBSE Class 6 Mathematics Book
- Param Publication
- CBSE Class 6
A four sided polygon is a quadrilateral. It has 4 sides and 4 angles.
We named the vertices in a cyclic manner.
This quadrilateral ABCD figure has four sides AB, BC , CD and DA. It has four angles ∠A , ∠B, ∠C and ∠D .
Quadrilateral ABCD, AB and BC are adjacent sides.
AB and DC are opposite sides. ∠A and ∠C are said to be opposite angles;
similarly, ∠D and ∠B are opposite angles.
Naturally ∠A and ∠B are adjacent angles.