# How to Measure an Angle Without a Protractor?

Measuring angles without a protractor is one of the fundamental aspects of geometry. Sine, cosine, and tangent are three concepts that will allow you to calculate an angle based solely on the lengt...
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http://www.ehow.com/how_7364713_measure-angle-protractor.html

## How to Measure an Angle With a Protractor?

Computer technology can automate many tasks, but the simplicity and ease of a protractor make it a useful tool. You can use a protractor to measure and draw angles. Protractors are commonly made of...
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http://www.ehow.com/how_7341101_measure-angle-protractor.html

## How to Draw an Angle With a Protractor?

If you want to draw an angle that is a precise degree of sharpness, you should use a protractor. Otherwise, the angle will be inaccurate because the human eye is not capable of gauging precise angl...
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http://www.ehow.com/how_8094294_draw-angle-protractor.html

## How to Find an Angle Without a Protractor?

Finding the exact measure of an angle requires the use of a protractor or other mathematical instrument, but you can use formulas from trigonometry to get a very close approximation of the angle. T...
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http://www.ehow.com/how_8288665_angle-protractor.html

## How to Construct a 90 Degree Angle With a Protractor?

A protractor is a useful tool for measuring as well as creating angles. You can use a protractor to create a 90-degree angle, also known as a right angle. Being able to create right angles is usefu...
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http://www.ehow.com/how_8143774_construct-90-degree-angle-protractor.html