6.1 Angles and Their Measure/51

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{\pi}{2}\cdot\frac{180^{\circ}}{\pi}=\frac{/cdot \cancel{2} /cdot {2} \cdot {3} \cdot{3} \cdot {3}}{\pi} = \frac{2\pi}{\pi} }