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Raise a perpendicular from one arm to the other.
This creates a right angled triangle. Measure two of the sides of the triangle and use the appropriate trigonometric ratio and a computer/calculator/slide rule/tables to convert the ratio to an angle.
eg measuring the side adjacent to the angle and the length of the side opposite the angle, which is the perpendicular raised, dividing the length of the opposite side by the adjacent side gives a value which can be looked up in arc tan tables (etc) to get the angle.
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How can an angle be measured?
With a protractor
How do you find measurements of a numbered angle?
Angles can be measured with a protractor.
What is the use in measuring an angle?
Angles are measured using a protractor
What is the unit measured by a protractor?
A protractor measures the angle between two lines meeting at a point called a vertex. The angle measurement is in degrees.
How do you draw an angle of 45 degrees without using a protractor?
it
How can an angle be measured?
With a protractor
How i measure an angle with a potractor?
To measure an angle: # Align the bottom line of the protractor with one ray of the angle being measured. # Center the central point along the bottom of the protractor with the junction of the angle being measured. # Find where the other ray of the angle crosses the rounded part of the protractor. The numbered mark at which it crosses is the number of degrees of the angle being measured.
How do you find measurements of a numbered angle?
Angles can be measured with a protractor.
What is the use in measuring an angle?
Angles are measured using a protractor
What is the unit measured by a protractor?
A protractor measures the angle between two lines meeting at a point called a vertex. The angle measurement is in degrees.
How do you make an angle without a protractor?
You don't always need a protractor to make an angle, just use a normal ruler.
How do you draw an angle of 45 degrees without using a protractor?
it
How do you measure angles without protractor?
consider an angle OAB and let us for simply proof lets say the angle is 40 degree measure the both sides of the angle and then measure the distance measured then multiply it with 20 we will get the product same as the angle
What is a angle mesured by?
The unit measured in is degrees, the tool used is a protractor. In some branches of mathematics, angles are also measured in "radians".
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 do you draw a 415 degree angle?
Use a protractor to draw a 55 degree angle and indicate that the angle needs to be measured once around the circle and then some.
How do you find angle measures without a protractor?
use the sun and silhoutte
