# 2.       (a) Identify three triangles in the figure.            (b) Write the names of seven angles.            (c) Write the names of six line segments.            (d) Which two triangles have $\angle B$ as common?

(a) Three triangles in the given figure are $\Delta ABD$$\Delta ACD$ and $\Delta ABC$.
(b) Seven angles in the given figure are $\angle ABD$$\angle BDA$$\angle DAB$$\angle ADC$$\angle DCA$$\angle CAD$ and $\angle BAC$.
(d) $\Delta ABD$ and $\Delta ABC$ have $\angle B$ as common.