6.1 Angles and Their Measure/43

Failed to parse (Conversion error. Server ("https://en.wikipedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle -135^{\circ }\cdot {\frac {\pi }{180^{\circ }}}={\frac {{\cancel {3}}\cdot -3\cdot {\cancel {3}}\cdot {\cancel {5}}}{1}}\cdot {\frac {\pi }{{\cancel {2}}\cdot {\cancel {2}}\cdot {\cancel {5}}\cdot {\cancel {3}}\cdot 3}}=-{\frac {3\pi }{4}}}