Q. 20. Prove that
Sol.


Q. 21. Show that the points (3, 2), (0, 5), (– 3, 2) and (0, – 1) are the vertices of a square.
Sol.
Let the points be A (3, 2), B (0, 5), C (– 3, 2) and D (0, – 1)
Using distance formula.
| Mathematics 2008 Question Papers Class X | |||||||
| Delhi | Outside Delhi | Compartment Delhi | Compartment Outside Delhi | ||||
| All Sets(PDF) | Set 1 | Set 1 | |||||
| Set 2 | Set 2 | ||||||
| Set 3 | Set 3 | ||||||