Answer:(1) The correct option is b. (2) The correct option is c.
Step-by-step explanation:
(1)
It is given that the △ABD≅△FEC.
So by (CPCTC) corresponding parts of congruent triangles are congruent.
![\angle CFE=\angle DAB](https://img.qammunity.org/2019/formulas/mathematics/middle-school/p6yiqh4n4qh04rxkfqopirj183xp70iiy0.png)
It is given that the angle DAB is 63 degree.
![\angle CFE=63^(\circ)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/8bz5v9pah9of94j5s6r7v8wbuoqzqojbcm.png)
Therefore, the correct option is b.
(2)
It is given that the △ABD≅△FEC.
So by (CPCTC) corresponding parts of congruent triangles are congruent.
![BD=EC](https://img.qammunity.org/2019/formulas/mathematics/middle-school/xgwqvghc5jnzzxilcjwb4ieqmzlqt3iz3d.png)
![BD=CD+DE](https://img.qammunity.org/2019/formulas/mathematics/middle-school/7tqy0ajl8cl75dxbm6609226vkl8luwiaw.png)
![BD=8+10](https://img.qammunity.org/2019/formulas/mathematics/middle-school/cxw8pbxalrnkfsk3bp03uld51dbi474tnw.png)
![BD=18](https://img.qammunity.org/2019/formulas/mathematics/high-school/ms7cm8iq1j4e550o4mcjqzxigwljp2q0qr.png)
Therefore, the correct option is c.