21) Fill in the missing reasons for the following two-column proof.
Given: AB is the bisector of
Prove: x = 9
Statements
1) AB is the bisector of ZCAD.
2) ZCAB= ZBAD
3) mACAB=m4BAD
4) 7x+2=5(x+4)
5) 7x + 2 = 5x + 20
6) 2x=18
7) x=9
(7x + 2)°
/5(x + 4)°
Reasons
1)
2)
3)
4).
5)
6)
7)
