how know if a Type has inherited some other type?

Question

how know if a Type has inherited some other type ?

Type t;
// i get the t from somewhere
bool b = t.IsInhertitedFrom(typeof(BaseType));

Answer 1

bool b = t.IsSubclassOf(typeof(BaseType))

and to check if type implements interface use:

bool b = t.GetInterface(typeof(IMyInterface).FullName) != null