• # question_answer 16) (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) We know that, a triangle is a three sided polygon. So, three triangles in the given figure are as follows: (i) $\Delta ABD$ (ii) $\Delta ADC$ (iii) $\Delta ABC$ (b) An angle is made up of two rays starting from a common end point here the names of seven angles are as follows: (i) $\angle BAD$ (ii) $\angle BAC$ (iii) $\angle CAD$ (iv) $\angle ABD$ (v) $\angle ACD$ (vi) $\angle ADC$ (vii) $\angle ADB.$ (c) The names of six line segments are as follow : (i) AB (ii) BD (iii) DC (iv) CA (v) AD (vi) BC (d) From the given figure, it is clear that $\angle B$ is common of $\Delta ABD$and$\Delta ABC.$