Question

In parallelogram RNCS, BCN and ARS are isosceles triangles, vertex at angles B and A respectively. Which is m 15 years ago

Answer 1

120 because of similarity (30 +30 +120 = 180).

Answer 2

if BCN and ARS are isosceles triangles,
than BCN ,<N=<C=30 , <B=120
<S=<R=30
<RAS=120
because BCN similar to ARS