Question

In Fig., line l || m. Find the values of a, b, c, d. Give reasons.

Answer 1

In the given figure, line l || m.
Thus, we have:
$$\begin{gathered} \angle a=110°\left(\mathrm{Vertically}\mathrm{opposite}\mathrm{angles}\right) \\ \angle b=\angle a=110°\left(\mathrm{Corresponding}\mathrm{angles}\right) \\ \angle d=85°\left(\mathrm{Vertically}\mathrm{opposite}\mathrm{angles}\right) \\ \angle c=\angle d=85°\left(\mathrm{Corresponding}\mathrm{angles}\right) \end{gathered}$$