If triangle have a two angle are equal, to they have same degree measure, to:

180 - 16 = 164 (d.m. of both angle, mean 82, later 41)

Bisectrise is made half.

Then resulted angles are same and vertical, which you must find out them d.m.

So you must find would one angle got from bisectrise.

Can be two of every angle.

So if this triangle is have two same angles, then on bisectrises have a smaller angles is 45 d.m. (it vertical).