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Are the lines that contain the altitudes of a triangle are parallel?
No, they meet at a single point.
What are the three types of outcomes for linear equations?
All the lines meet at one point: a single solution. All the lines are the same: infinitely many solutions. At least one of the lines does not pass through the point of intersection of the others: no solution.
How many points do perpendicular lines share?
Perpendicular lines will only share one point: the point of intersection, where the two lines meet.
What do you call when two lines have meet?
It depends what shape the lines meet in. If they meet in a triangle the point in which the lines meet are called the vertex.In Geometry, this isn't precisely true, since there are no "lines" in a triangle, only line segments.In Euclidean (standard) geometry, two lines can only:(a) meet at a single "point"; OR(b) never meet (they are parallel lines).You could ask "what if they meet at several points?". In that case, there is just one line. A line goes on infinitely far in either direction. And if two lines meet at more than one point, they are congruent at every point, and are therefore both just the same line. It is impossible for two different lines to meet at two or more points in Euclidean geometry.
Do intersecting lines meet at two points?
Lines intersect if the meet at one point. Perpendicular lines also meet at one point, but their intersection is a right angle. Intersecting lines in the plane do not meet at two points.
