-
The sides of a triangle are 3 cm, 4 cm and 5 cm. The area (in cm²) of the triangle formed by joining the mid points of this triangle is :
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- 6
- 3
- 3/2
- 3/4
- 6
Correct Option: C
Using Rule 1, 
3² + 4² = 5²
∆ ABC is a right angled triangle.
| ∴ area ABC = | × AB × BC | |
| 2 |
| = | × 3 × 4 = 6cm² | |
| 2 |
∴ Required Area of ∆ DEF
| ∴ | × 6 = | sq.cm. | ||
| 4 | 2 |
