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Draw a line of any length. Set the protractor at one end of this line and draw an angle of 60 degrees - measuring angles from the other end of the line. Move the protractor to the other end of the original line and repeat.
If necessary extend the lines of the angle until they meet. The three lines will form a regular (equilateral) triangle.
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Is it possible to solve a right triangle without using Pythagorean theorem?
Yes simply with a protractor and a measuring device.
How do you find the value of an angle?
You could measure it using a protractor, derive it from basic geometric properties (for example angles of a regular polygon), or calculate it using trigonometry.
When given all 3 side lengths of a triangle but none of the angle measures you can solve for all angle measures using?
A protractor is used for measuring angles and the 3 angles in a triangle add up to 180 degrees.
How do you find a 30 degree angle without a protractor?
It is easy to draw an equilateral triangle without a protractor. That gives a 60 degree angle. It is then simply a matter of bisecting the 60 degree angle, using an unmarked rule and compass, to get a 30 degree angle.
How are angles calculated?
by using a protractor
