Solve the question of Lines, Angles, and Polygons and select the option from the choices A through D/E. Check your Answer and view the explanation.
In the figure, what is the value of a?
The angle made by a line is 180°. Hence, from the figure, we have
a + 2a + 3a + 4a = 180
10a = 180
a = 18
The answer is (B).