Answer:
It is true that ΔBCD and ΔEFG must be congurent .
Option (A) is correct .
Explanation:
As given the figure in the question
In ΔBCD and ΔEFG
(1) ∠CDB = ∠FGE
(2)CB = FE
(3)∠CBD = ∠FEG = 90°
Thus by using the ASA congurence property .
ΔBCD ≅ ΔEFG
Therefore It is true that ΔBCD and ΔEFG must be congurent .
Option (A) is correct .