# Mutual arrangement of planes

Two planes in space can be either mutually parallel or intersecting. Planes are parallel if two intersecting lines of one plane are correspondingly parallel to two intersecting lines of the other plane. If the planes intersect, they form two acute and two obtuse angles. This calculator determines whether the planes intersect or not, as well as perpendicular or not. To do this, you need to enter the equations of the two planes being tested.

**Mutual arrangement of planes**

**Enter the equations of the planes:**

**x +**

**y +**

**z +**

**= 0**

**и**

**x +**

**y +**

**z +**

**= 0**