The exterior angle of a triangle is equal to sum of two interior angles.

In figure if $x°, y°$ and $z°$ are exterior angle of $△ABC$, then $x°+y°+z°$ is

In Figure, the value of $x$ is

What is the sum of angles of a triangles$?$

In fig, the value of $x$ is

In the given figure, what will be the value of $y$?

Find the value of $a+b$, if $b=2a$.

In the diagram $AMN, QRM$ and $PRN$ are all straight lines. The value of $\alpha +\beta$ is:

Triangle $ABC$ is isosceles with $AB=AC$. The measure of angle $BAD$ is $30°$ and $AD=AE$. The measure of angle $EDC$, is

The sides of a triangle are produced in order. The sum of the three exterior angles so formed is :-