Pleaz can someone tell me which one of the following is NOT true about perpendicular lines?

Question

#1.Perpendicular lines intersect.
#2.Perpendicular lines form a right angle at the point of intersection.
#3.Perpendicular lines form a 90 degree angle at the point of intersection.
#4.Perpendicular lines form an obtuse angle at the point of intersection.
I already know that they intersect.

Answer 1

ANSWER NUMBER FOUR (((((((4))))))))is wrong..........................................................................................................

Answer 2

OK, here's the thing. #2 & #3 say exactly the same thing, since a right angle is by definition a 90 degree angle. If perpendicular lines form a right angle at the point of intersection(which they do), they cannot form an obtuse angle, which is more than 90 degrees, so the one that is NOT true is 4!

Answer 3

4

Answer 4

4

Answer 5

4

Answer 6

4

Answer 7

The last one - obtuse angle. Perpendicular lines create right angles which are by definition 90 degrees. And don't listen to the people that say #1. You are right. It is parallel lines that don't intersect.

Answer 8

I would say #3 is not true. It doesnt have to be a 90 degree angle at the point of intersection

Answer 9

That's funny...2 and 3 are the same thing.

The majority is right...it's 4...because all angles it forms are 90 degrees, and a 90 degree angle is a right angle. Obtuse angles are greater than 90 degrees...so that's obviously impossible.

Answer 10

#4.

By definition, perpendicular lines are two lines that intersect at a 90 degree (aka right) angle.

Answer 11

Two lines are perpendicular if they meet at right angles. The two lines in the applet below are perpendicular. You can drag points A, B, or P to change the lines.