Question

5. Calculate the area of the shaded region in the Fig. 11.3.
1.5 m
27 m
1.5 m
1.5 m
1.5 m
43 m
Fig. 11.3​

Answer 1

Answer:

1.3

Class_9_Triangles_Quadrilateral_ABCD1

Prove that

(i) Δ ABD ≅ Δ BAC

(ii) BD = AC

(iii) ∠ ABD = ∠ BAC.

Answer:

(i) In quadrilateral ABCD, we have AD = BC and ∠DAB = ∠CBA.

In ΔABD and ΔBAC,

AD = BC [Given]