From the given figure $\mathrm{\angle }DOC\backslash angle\; DOC$ =

Which of the following is different ?

In the given triangle is it possible to exist all exterior angles as right angles.

In the figure linear pair of angles are

In the figure $l\mathrm{\mid }\mathrm{\mid }ml\backslash ,||\backslash ,m$, then x =

In the figure $l\mathrm{\mid }\mathrm{\mid }ml\backslash ,||\backslash ,m$, then y =

In the figure $l\mathrm{\mid }\mathrm{\mid }ml\backslash ,||\backslash ,m$ and n is a transversal, and if $\overrightarrow{AC}\backslash overrightarrow\{AC\}$ and $\overrightarrow{BC}\backslash overrightarrow\{BC\}$ are the bisector to interior angles $\mathrm{\angle }A\backslash angle\; A$ and $\mathrm{\angle }B\backslash angle\; B$; $\mathrm{\angle }ACB\backslash angle\; ACB$ =

In the figure $p\mathrm{\mid }\mathrm{\mid }qp\backslash ,||\backslash ,q$ then the relation between x and y is

In the figure $l\mathrm{\mid }\mathrm{\mid }ml\backslash ,||\backslash ,m$, then the value of y is

In the figure $l\mathrm{\mid }\mathrm{\mid }ml\backslash ,||\backslash ,m$ and n is a transversal $\overrightarrow{AC}\backslash overrightarrow\{AC\}$ and $\overrightarrow{BD}\backslash overrightarrow\{BD\}$ are the bisectors to interior angles $\mathrm{\angle }A\backslash angle\; A$ and $\mathrm{\angle }B\backslash angle\; B$; then the value of ‘a’ is