Which descriptor could be used to characterize three lines that intersect at the corner of a cube:

coplanar, cubic, concurrent, or complementary?

A) Coplanar
B) Cubic
C) Concurrent
D) Complementary

http://math.about.com/od/geometry/ss/linessegments_4.htm

So by looking at the website that you emailed me it's congruent correct.

10k

The correct descriptor to characterize three lines that intersect at the corner of a cube is "concurrent" (Option C).

To understand this concept, we need to understand the meaning of the other descriptors and how they relate to the given scenario:

- Coplanar: This term refers to objects or lines that lie within the same plane. However, in the case of a cube, three lines that intersect at a corner are not coplanar since they do not lie within the same plane.

- Cubic: This term refers to something related to a cube. While it is true that the lines intersect at the corner of a cube, using "cubic" to describe the lines is not appropriate since we are talking about the relationship between the lines, not the shape itself.

- Concurrent: This term describes three or more lines that intersect at a single point. In the given scenario, the three lines indeed intersect at a corner of the cube, making them concurrent. Therefore, "concurrent" is the correct descriptor for this situation.

- Complementary: This term is not applicable to this scenario. In mathematics, "complementary" usually refers to angles that add up to 90 degrees. It does not describe the relationship between intersecting lines.

Therefore, the correct answer is C) Concurrent.