# 🧮 Plane Angle

## Gradian to Radian

The plane angle conversion of 1 gradian is 0.015707963267949 radian.

Gradian
to
Radian
Gradian Radian
0.01 0.00015707963267949
0.05 0.00078539816339745
0.1 0.0015707963267949
0.25 0.0039269908169872
1 0.015707963267949
5 0.078539816339745
10 0.15707963267949
20 0.31415926535898
50 0.78539816339745
100 1.5707963267949

### Plane Angle

In plane geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle. Angles formed by two rays lie in a plane, but this plane does not have to be a Euclidean plane. Angles are also formed by the intersection of two planes in Euclidean and other spaces. These are called dihedral angles. Angles formed by the intersection of two curves in a plane are defined as the angle determined by the tangent rays at the point of intersection. Similar statements hold in space, for example, the spherical angle formed by two great circles on a sphere is the dihedral angle between the planes determined by the great circles.