453,127 views
10 votes
10 votes
In the diagram, ray BD bisects \angle ABC∠ABC. Find m\angle ABCm∠ABC

In the diagram, ray BD bisects \angle ABC∠ABC. Find m\angle ABCm∠ABC-example-1
User Rodrigo Loza
by
2.6k points

1 Answer

8 votes
8 votes

Check the picture below.


8x-16=4x+20\implies 4x-16=20\implies 4x=36\implies x=\cfrac{36}{4}\implies \boxed{x=8} \\\\\\ (8x-16)~~ + ~~(4x+20)\implies 12x+4\implies 12(8)+4\implies \LARGE \begin{array}{llll} \stackrel{\measuredangle ABC}{100^o} \end{array}

In the diagram, ray BD bisects \angle ABC∠ABC. Find m\angle ABCm∠ABC-example-1
User Chirayu Chamoli
by
2.9k points