Math questions?

Question

2: Using the parallel postulate, we can deduce that any two lines not intersecting are parallel.

True
False



3: The sum of the exterior angles of a triangle is 180 degrees.

True
False

Answer 1

Both false.

Answer 2

2. I think it's true
3. It's definitely false. The sum of the exterior angles of a triangle is 360 degrees.
Let A, B, C be the angles of the triangle.
It's A+B+C=180.
The exterior of an angle is 180 minus the angle so the sum of their exterior angles is
(180 - A) + (180 - B) + (180 - C) =
3*180 - ( A + B + C)= 3*180 - 180 = 2*180 = 360

Answer 3

I have the answer, because i ask a teacher. the answer for
2)true
3)false, because the sum of a whole triangle should equal 180. the exterior is a line thats outside of the triangle
did this help?

Answer 4

2. true - any tow lines that are not parallel will eventually intersect.

3. false. - The INTERIOR angles of a triangle equal 180 degrees.

Answer 5

2. true- two line seems not intersecting but if you extend it they would intersect(if they are not parallel lines)
3. false- like what they said.... interior angles sum up to 180

Answer 6

2- True

3- False

Answer 7

2) True- as their lengths tend to infinity, they must intersect UNLESS they are parralell

3) FALSE- INTERIOR=180, not Exterior.

Answer 8

2)True.If two lines have different gradients they will intersection.what matters is just where they will intersect.

3)Absolutely false.

Answer 9

2) false
3) false

Answer 10

2 and 3 are true