គណិតវិទ្យាថ្នាក់ទី6 ៖ មេរៀនទី4/សំណង់មុំ 60 ដឺក្រេ ដោយប្រើដែកឈាន និងបន្ទាត់(លំហាត់ទី2 ទំព័រទី23) #26

Описание: In this video tutorial, you will learn to construct a sixty degrees angle (60°) using a compass. Along with the construction of 60° angle, you will also learn, why and how is the angle so formed, of measure 60 degree. You can also verify the results, using a protractor.