When calculating angles using a circle theorem, always state which theorem applies. It may not be possible to calculate the missing angle immediately. It may be necessary to calculate another angle ...

A technician often has to sketch or design ductwork and the other parts of an HVAC system. Sometimes you have to sketch the room or building you are working with. This means working with lines, angles ...

While multimedia tools have been slow to penetrate instructional methods in some subjects, the math world is bursting with tales of teaching technologies that visualize concepts, adapt to students’ ...

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Silva Chang’s Colorado Math Circle recently hosted a Puzzlepalooza competition at the University of Colorado Boulder on December 7. The Colorado Math Circle is an organization directed by Silva Chang ...