Angle between straight lines

The angle between two intersecting lines is the value of the smallest plane angle at the intersection of these lines. If two straight lines are parallel, then the angle between them is assumed to be zero. The angle between two intersecting straight lines is the smallest angle (sharp) formed at the intersection of these lines.

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Angle between straight lines

Enter the equations of the lines
x +
y +
= 0
и
x +
y +
= 0
Calculate
In radians:
In degrees:
:
The center and radius of an inscribed circle in a triangle
Mutual arrangement of planes
A point inside a triangle
Distance between a point and a straight line
Angular coefficient of a straight line
Distance between a point and a plane
Angle between planes
Distance between parallel planes