185k views
4 votes
AB=AD and BC=DC.
y = [ ? ]
Enter

AB=AD and BC=DC. y = [ ? ] Enter-example-1
User Roy Berris
by
5.7k points

1 Answer

2 votes

Answer:

y = 49°

Explanation:

∠DBC = ∠CBD { BC = DC ; angles oppostie to the equal sides are equal}

∠DBC + ∠CBD + ∠C = 180 {angle sum property of triangle}

y + y +82 = 180

2y = 180 - 82

y = 98/2 = 49

User SunshinyDoyle
by
6.1k points