Units of Measuring Angles

A sexagesimal degree is the amplitude of the angle obtained by dividing the circle into 360 equal parts.

1º = 60' = 3,600''.

1' = 60''.

A radian is the measure of an angle whose arc is one radio.

Radian of a Circle

1 rad= 57° 17' 44.8''

360º = 2pirad

180º = pirad

Examples

30ºflecha rad

Degree Radian Conversion

Pi/3 rad flecha º

Radian Degree Conversion


Classification of Angles


Acute < 90° Right = 90° Obtuse > 90° Straight = 180°
Acute Angle Right Angle Obtuse Angle Straight Angle