Question

In the diagram given that BD = DC =AD. The value of x in given figure is​

Answer 1

Answer:

angle BAD = 50 degree since BD = AD by isoceles triangle property

therefore angle BDA = 80 degree by triangle sum property of 180 degree

therefore angle ADC = 100 degree by LPA

now given AD = DC

there fore angle DCA = x by isoceles triangle property

therefore 100 + 2x = 180 degree

therefore x = 40 degree