How To Measure A Reflex Angle Using A Protractor. - видео

In this video you will be shown how to measure a reflex angle. The trick here is to measure the smaller angle and subtract the answer from 360 degrees. So in example 1 you need to work out angle x the reflex angle. Do this by first measuring the acute angle which is 47 degrees. Then subtract 47 from 360 which is 313 degrees. In example 2 you need to measure the reflex angle y. To do this first measure the obtuse angle of 119 degrees. Finally subtract this from 360 degrees which is 241 degrees.,
Источник видео: RuTube.ru (Обучение)