In the given figure $\mathrm{AB}\Vert \mathrm{DE}$. Find $\mathrm{a}°+\mathrm{b}°-\mathrm{c}º$:

 

In the given figure $\mathrm{AB}\Vert \mathrm{CE}$ and $\mathrm{BC}\Vert \mathrm{FG}$. Find the value of $\mathrm{x}°$.

$\mathrm{AB}\Vert \mathrm{CD}$, shown in the figure. Find the value of $\mathrm{x}$.

In the figure $\mathrm{PQ}\Vert \mathrm{LM}\Vert \mathrm{RS}$. Find the value of $\angle \mathrm{LRS}$.

In the figure $\mathrm{AB}\Vert \mathrm{DC}$ and $\mathrm{DE}\Vert \mathrm{BF}$. Find the value of $\mathrm{x}$.

In the figure $\mathrm{AB}\Vert \mathrm{CD},\angle \mathrm{ABE}=100$. Find $\mathrm{m}\angle \mathrm{CDE}$.

In the figure $\mathrm{AB}\Vert \mathrm{CD}$, find $\mathrm{x}°$ (i.e., $\angle \mathrm{CDF}$).

In the given figure $\mathrm{XY}\Vert \mathrm{PQ}$, find the value of $\mathrm{x}$.

In the given figure $\mathrm{AB}\Vert \mathrm{CD}$ and $\mathrm{EF}\Vert \mathrm{DQ}$. Find the value of $\angle \mathrm{DEF}$.