# How to Calculate the Size of a Central Angle?

If you've ever seen a blueprint or had to build something, you know how important angles are and the ability to calculate their sizes. In a circle, knowing what the central angle is over a certain ...
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http://www.ehow.com/how_8143388_calculate-size-central-angle.html

## How to Calculate the Measure of the Central Angle of a Regular Ten Sided Polygon?

A central angle of a polygon is the angle created from the center point of the polygon to two adjacent vertices. A regular polygon is defined as a polygon where all sides and interior angles are co...
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http://www.ehow.com/how_8519340_calculate-regular-ten-sided-polygon.html

## How to Calculate Angle Size?

Angle size calculation refers to the use of geometrical laws and invariants to find out how many degrees an angle is. Therefore, it is different from angle size measurement, which includes the use ...
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http://www.ehow.com/how_8497231_calculate-angle-size.html

## How to Get the Central Angle Area From the Circle?

The central angle of a circle is formed by two radii, and the area formed by that angle can be calculated using the degrees or radians of the angle. The radius of a circle is a line segment that go...
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http://www.ehow.com/how_8244427_central-angle-area-circle.html

## How to Find the Area of a Segment With a 30 Central Angle Whose Radius Is 18?

The area of a circular segment is the area between a part of its circumference, or perimeter, and a chord, which is a straight line that connects two points on the circumference. A chord is differe...
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http://www.ehow.com/how_7916062_area-central-angle-radius-18.html