Answer
$\dfrac{3\pi}{4} \text{ radians} $
Work Step by Step
In order to convert from degrees to radians, we multiply the given measurement by $\dfrac{π}{180^{\circ}}$.
Therefore
$135^{\circ}=(135) \times \dfrac{\pi}{180}\text{ radians} =\dfrac{3\pi}{4} \text{ radians} $
