Question

define the angle of intersection
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Answer 1

Answer:

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It may be defined as the acute angle between two lines normal to the planes. The angle between a plane and an intersecting straight line is equal to ninety degrees minus the angle between the intersecting line and the line that goes through the point of intersection and is normal to the plane.

Answer 2

when any two line intersect each other the point on which they intersect is the point of intersection

in the figure O is the point of intersection