Point S lies between points R and T on a straight line. If $RT$ is $10$ centimeters long and $RS$ is $4$ centimeters, what is the length of $ST$?

• A. $6$ centimeters
• B. $4$ centimeters
• C. $14$ centimeters
• D. $10$ centimeters

Answer: (A)

Verified step by step guidance

1. Identify the points on the line and their order: R, S, and T, with S lying between R and T.
2. Recall that the length of segment RT is the sum of the lengths of segments RS and ST, which can be written as \(RT = RS + ST\).
3. Substitute the known values into the equation: \$10 = 4 + ST$.
4. Isolate the unknown length \(ST\) by subtracting 4 from both sides: \(ST = 10 - 4\).
5. Express the final step as the length of segment ST, which is the difference calculated in the previous step.