When the combined equation is a second degree equation in x and y.
(x^2) + 2h.xy + (y^2) + 2g. x + 2f. y + c = 0
intersecting lines...
Perpendicular Lines are two straight lines that intersect to form a 90 degrees or an right angle.Regards,
2 straight lines which cross over (intersect) each other Example: the letter x
They are closed plane figures bounded by straight lines that do not cross each other.
Intersecting Lines. Two lines next to each other but go straight and never meet are called parallel lines. Perpendicular is when two lines cross right into the middle and makes 4 right angles (90 degrees). you!! :)
Yes, well the don't have to cross they can just run into each other
Yes.
intersecting lines
Perpendicular lines are a specific kind of intersecting lines. Intersecting lines are any two lines that cross through each other. Depending on how they cross each other, they may make angles from 170 degrees to 1 degree. Perpendicular lines are specifically two straight lines that cross each other at right angles, so that they create angles that are 90 degrees.
Their angles of intersection are the same, and the angles facing each other are supplementary.
Either intersecting lines or perpendicular lines
Just because they cross over each other doesn't mean they aren't still called lines.