# Beta version

BETA TEST VERSION OF THIS ITEM

This online calculator is currently under heavy development. It may or it may NOT work correctly.

You CAN try to use it. You CAN even get the proper results.

However, please VERIFY all results on your own, as the level of completion of this item is NOT CONFIRMED.

Feel free to send any ideas and comments !

This online calculator is currently under heavy development. It may or it may NOT work correctly.

You CAN try to use it. You CAN even get the proper results.

However, please VERIFY all results on your own, as the level of completion of this item is NOT CONFIRMED.

Feel free to send any ideas and comments !

# Central angle - values and units

The first central angle | <= | |

The second central angle | => |

# Illustration - how your angles look like

# Some facts

- When we draw two rays from the center of the circle (or disk) containing radius, we get
**two complementary angles**. - The angle whose arms have a beginning in the center of the circle and contains its radius is called the
**central angle**. - The
**sum of the central angles**in the circle is**360 degrees**(2π radians). Sometimes we say that these angles**complement each other**. - When we know one central angle $\alpha$, we can calculate the second one:

$\beta = 360^{\circ} - \alpha = 2\pi - \alpha$ - The angle whose measure is 360 degrees is called
**full angle**, 180 degrees**half-full angle**. - ⓘ Hint:
- If you want to learn more about the properties of the circle, you can see on our other calculator: Disk: area and circumference.

- If you want to learn more about different angles measures, you can see on our angle units converter.

- If you want to learn more about the properties of the circle, you can see on our other calculator: Disk: area and circumference.

# Tags and links to this website

Tags:

central_angle · disk_angles_central · circle_angles_central · central_angles_in_disk · central_angles_in_circle · sum_of_central_angles_in_circle · sum_of_central_angles_in_disk

Tags to Polish version:

# What tags this calculator has

# Permalink

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