Line is different from line segment or a ray. The given lines MR and XY are best described by: Option A: The lines intersect at a 90° angle.
To get to know about intersection of MR and XY, we need to know what a line is.
<h3>What is line, line segment and a ray?</h3>
- A line usually refers to infinite lenghted straight line in the Euclidean space.
- A line segment is a segment (of finite length) of a line.
- A ray is has fixed on endpoint, but it extends infinitely from the other endpoint, so no other endpoint at all.
<h3>When does two lines intersect?</h3>
If they are not parallel (having 0 degree angle between each other) and not coincident (not lying over each other), then those two lines always intersect.
Since the considered lines MR and XY are said to be perpendicular (having 90° angle between them, thus, they will intersect each other).
Therefore, the given lines MR and XY are best described by: Option A: The lines intersect at a 90° angle.
Learn more about angle between two lines here:
brainly.com/question/24329241
The Solution:
The total degree of the pipe flange is 360 degrees.
It is given that the pipe flange has 10 bolt holes that are equally spaced.
This means that the spacing between the 10 bolt holes can be calculated as below:
![\text{ }\frac{\text{ Total degrees}}{\text{ number of bolt holes}}=\frac{360}{10}=36^o](https://tex.z-dn.net/?f=%5Ctext%7B%20%7D%5Cfrac%7B%5Ctext%7B%20Total%20degrees%7D%7D%7B%5Ctext%7B%20number%20of%20bolt%20holes%7D%7D%3D%5Cfrac%7B360%7D%7B10%7D%3D36%5Eo)
Thus, the spacing of the bolt holes (in degrees) is 36 degrees.
Therefore, the correct answer is 36 degrees.