RBSE Class 8 Maths Notes Chapter 4 Practical Geometry

These comprehensive RBSE Class 8 Maths Notes Chapter 4 Practical Geometry will give a brief overview of all the concepts.

RBSE Class 8 Maths Chapter 4 Notes Practical Geometry

→ To construct a unique quadrilateral, it is necessary to have the knowledge of atleast five of its parts.

→ A quadrilateral can be constructed uniquely if the lengths of its four sides and a diagonal is given.

→ A quadrilateral can be constructed uniquely if its two diagonals and three sides are known.

→ A quadrilateral can be constmcted uniquely if its two adjacent sides and three angles are known.

→ A quadrilateral can be constmcted uniquely if its three sides and two inculded angles are given.

→ Data about five parts of a quadrilateral in order to be sufficient must also satisfy:

• the triangle inequality and
• angle sum property of a triangle, wherever applicable.

→ In all cases, it is convenient and helpful to draw rough sketch of the quadrilateral and intricate the data on it.