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Answered 2011-01-26 00:29:19

Yes, they ALWAYS do!

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Why do parallel lines always make vertical angles?

Wrong statement. Parallel lines don't always make vertical angles without the transversal, the line that passes through these lines. Without the transversal, we can't make the conclusion that parallel lines form vertical angles.


What is perpendicular lines what is parallel lines what is intersecting lines?

Perpendicular lines intersect each other at right angles which are 90 degrees Parallel lines never intersect each other and remain the equal distance apart. Intersecting lines form vertical opposite equal angles


Parallel lines form congruent alternate interior angles?

Parallel lines cut by a transversal form congruent alternate interior angles.


How do you calculate parallel line angles?

Parallel lines do not meet and so do not form angles.


When two lines intersect they form two pairs of opposite angles called?

Vertical AngleThey form vertical angles


If two lines intersect to form adjacent angles then the lines are perpendicular?

Only if the angles formed are right angles otherwise they form vertical opposite equal angles


Do a pair of intersecting lines form two pairs of vertical angles?

Yes, a pair of intersecting lines always forms a pair of vertical angles.


How many pairs of vertical angles do 2 intersecting lines form?

4 angles


When two lines intersect they form two pairs of opposite angles called what angles?

Vertical angles.


What is the converse of parallel lines conjecture?

If two lines are cut by a transversal to form pairs of congruent corresponding angles, congruent alternate interior angles, or congruent alternate exterior angles, then the lines are parallel.


if two lines intersect their intersection is?

Perpendicular if they form right angles if not they form vertical opposite equal angles


How many angles does parallel have?

Parallel lines do not meet and so cannot form an angle.


When 2 lines intersect they form 2 pairs opposite angles called?

vertical angles


Do perpendicular lines form vertical angles at intersections are always acute?

Yes, all perpendicular angles form 90 degree angles.


What lines are lines that form acute or obtuse angles at the point of intersection?

Vertical equal opposite angles are formed when lines intersect each other.


Is angles in parallel lines supposed to add up to 360 degrees?

Parallel lines do not meet. Therefore they do not form any angles! So the angles (that do not exist) cannot add up to anything.


What do you call two lines that form 4 right angles?

parallel


When two lines intersect. they form two pairs of opposite angles are called?

vertical angles


Which do you use when parallel lines form similar triangles?

Triangles do not have parallel lines but as right angles triangles they do have perpendicular lines that meet at 90 degrees.


Can perpendicular lines be parallel?

no perpendicular lines intersect one another to form 90 degree angles. parallel lines never intersect each other. perpendicular lines can NEVER be parallel


What lines are lines that form acute or obtuse angles at the point of intersectionn?

Lines that are neither parallel nor perpendicular.


What meets to form 4 angles?

two lines that are not parallel but are in the same plane.


What is a line that crosses parallel lines to form special angles called?

A transversal


How many parallel and perpendicular lines are in a parallelogram?

A parallelogram has 2 pairs of parallel lines and in the form of a rectangle it has 2 pairs of parallel lines and 4 perpendicular lines that meet at each of its corners at right angles.


If two lines are cut by a transversal to form pairs of congruent corresponding angles congruent alternate interior angles or congruent alternate exterior angles then what are the lines?

The lines are parallel. The only time you will see correpsonding, alternate interior, and alternate exterior angles is with a parallel transversal line.