geometry questions...?

Question

True or False:

1. Two lines perpendicular to the same line are perpendicular to each other.

2. All coplanar lines are parallel.

3. Any pair of perpendicular lines are coplanar.

4. If two segments are parallel, the lines containing them are coplanar.

5. Segments which share a common endpoint must be perpendicular.

If you can get all 5 correct first, then I will give you 10 points! Thanks!

the answers are
False
False
True
True
False
:) thanks everyone who got them right!

Answer 1

1. false
2.false
3. true
4.true
5.false

Answer 2

(1) False
(2) False
(3) True
(4) True
(5) False


Doug

Answer 3

1. True
2. False
3. True
4. True
5. False

Answer 4

1. False
2. False
3. True
4. True
5. False

Answer 5

1. True
2. False
3. False
4. False
5. True

Answer 6

1. false
2. false
3. true
4. true
5. false

Answer 7

1. false
2. false
3. true
4. true
5. false

Answer 8

1. false
2. false
3. false
4. true
5. false

Answer 9

in case you remedy this subject you come across 2 solutions Cos x = a million and Cos x = - 0.5 when you consider that Cos x = a million will mean x = 0 deg the respond would be x = Cos Inverse of - 0.5 that's a hundred and twenty deg or 2Pi / 3 p.s. you are able to remedy the difficulty with the aid of fixing sin^x with the aid of (a million-cos^2x) Then use trouble-free algebra and factorise

Answer 10

1.False
2. False
3. True
4. True
5. False

No explanations! Kind of hard to draw lines in here...