6.1 Angles and Their Measure/49

$-{\frac {5\pi }{4}}\cdot {\frac {180^{\circ }}{\pi }}=-{\frac {5{\cancel {\pi }}}{{\cancel {(2)}}\cdot {\cancel {(2)}}}}\cdot {\frac {{\cancel {2}}\cdot {\cancel {2}}\cdot 5\cdot 3\cdot 3}{\cancel {\pi }}}=-225^{\circ }$

Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://en.wikipedia.org/api/rest_v1/":): {\displaystyle -\frac{5\pi}{4}\cdot{1}=-\frac{5\pi}{4}\cdot\frac{180}{\pi}=-225^{\circ} }