+0  
 
0
469
1
avatar

Find angle ABC.

 

 Sep 19, 2020
 #1
avatar+1640 
0

∠ABD ≅ ∠DBC

 

3x = 6x - 30

 

- 3x = - 30  

 

-x = -10  | *-1

 

x = 10

 Sep 20, 2020

1 Online Users