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Q: Are any two pairs of perpendicular lines coplanar?

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Two lines that are perpendicular to the same plane are coplanar. This means that they lay on the same plane.

Spheres do not have any perpendicular lines.

rhomboid

A pentagon can have 0, 1 or 2 pairs of parallel lines. It can have 0 to 4 lines perpendicular to an adjacent line. A rhombus must have two pairs of parallel lines and none of them may be perpendicular to any other.

No, not always. Skew lines are never coplanar, but parallel lines are.

It need not have any. A right triangular prism has 12 pairs but could have 14.

a triangle, pentagon and that's all i can think of * * * * * A right angled triangle has a pair of perpendicular lines! Likewise, a pentagon can have a pair. A circle, ellipse etc do not.

there is 15 perpendicular lines in a cube

A polygon need not have ANY perpendicular or parallel lines. For example, consider an equilateral triangle. It can happen that two sides of a polygon, extended if necessary, meet at a point where they form a 90 degree angle. Those two lines are perpendicular. There may be pairs of lines such that, no matter how far you extend them in either direction, they will never meet. Such lines are parallel. A triangle cannot have parallel lines but it can have perpendicular lines. Any polygon of 4 or more sides can have sides that are perpendicular or parallel (or some of each).

Perpendicular lines are any two lines that intersect at a 90 degree angle.

Perpendicular lines are lines that cross at right angles. Intersecting lines can cross at any angle.

Any two intersecting lines (including perpendicular lines) will intersect at a single point.

Any polygon with four or more sides can have perpendicular and parallel lines.

Perpendicular lines are a subset of intersecting lines. The only difference is that perpendicular lines intersect at an angle of 90o, whereas intersecting lines can converge at any angle.

Any polygonal shape, other than a triangle can have perpendicular lines.

Some intersecting lines are perpendicular lines.Take any old pair of intersecting lines. If the angles at the intersectionhappen to be 90 degree angles, then the lines are perpendicular lines.

No. If the lines are parallel they will never meet or intersect at any point. If the lines are perpendicular they do intersect, but perpendicular lines are a special case of intersecting lines. Perpendicular lines are exactly 90 degrees from each other. Intersecting lines do not haveto be perpendicular... but perpendicular lines are always intersecting.

No.

Yes.

Perpendicular lines are specific kinds of intersecting lines. They both cross paths. Intersecting lines can cross paths in any way, but perpendicular lines have to cross at right angles.

yes they do. they have a perpendicular line. * * * * * No, a pentagon, as in a regular polygon does not have perpendicular lines. An irregular pentagon could, and you can always add perpendicular lines to any shape.

They are coplanar. ANY 2 lines would be coplanar, however a third line can be outside of the plane. just like 3 points will designate a plane and a triangle

A set of points, lines, line segments, rays or any other geometrical shapes that lie on the same plane are said to be Coplanar.

A set of points, lines, line segments, rays or any other geometrical shapes that lie on the same plane are said to be Coplanar.

Not necessarily. Lines can intersect at any angle. They are only perpendicular when they intersect at 90 degree angles.