please help me

1. In the diagram below, $AM=BM=CM$ and $\angle BMC+\angle A = 201^\circ.$ Find $\angle B$ in degrees.

2. In the diagram, $\triangle BDF$ and $\triangle ECF$ have the same area. If $DB=2,BA=3,$ and $AE=4,$ find the length of $\overline{EC}.$

3. In triangle $ABC$, $AB=AC,$ $\angle ABC=72^{\circ},$ and segment $\overline{BD}$ bisects $\angle ABC$ with point D on side $\overline{AC}.$ If point E is on side $\overline{BC}$ such that segment $\overline{DE}$ is parallel to side $\overline{AB}$ and point F is on side $\overline{AC}$ such that segment $\overline{EF}$ is parallel to segment $\overline{BD},$ how many isosceles triangles are in the figure shown?