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An angle is the region of the plane between two rays with common origin. The rays are called sides and have a common origin, the vertex.

An angle is positive if rotated in a counterclockwise direction and negative when rotated clockwise.

Angles are measured using the following units:

1.

Sexagesimal degree (°)

If the circumference of a circle is divided into 360 equal parts, the central angle corresponding to each of its 360 parts is an angle of one degree sexagesimal, (1°).

A degree has 60 minutes (') and a minute has 60 seconds ('').

2.

Radian (rad)

It is the measure of an angle whose arc is a radio.

2 rad = 360°    

  rad = 180°

30º rad

/3 rad º

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Emma

I am passionate about travelling and currently live and work in Paris. I like to spend my time reading, gardening, running, learning languages and exploring new places.

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