The sequences with a common ratio of 1/4 are: 512, 128, 32, 8, ... 256, 64, 16, 4, ... 320, 80, 20, 5, ... 768, 192, 48, 12, ... 560, 140, 36, 9, ...
The others have a common ratio of 4.
The common ratio is found by dividing the second term by the first term. For instance, in the first sequence, we would have 28/7 = 4. In the second sequence, we have 128/512 = 1/4.
Answer: A segment bisector, always passes through the midpoint of the segment and divides a segment in two equal parts. Points, lines, segments, and rays are all types of segment bisectors. If either a ray or a line serves as a segment bisector, it will be infinite.