Would I add PT and RT together or is there a specific equation

Mathematics
Tutor: None Selected Time limit: 1 Day

I have a parallelogram that has two intersecting lines coming from the edges. T is the variable where the lines intersect. R and P are in opposite corners of the parallelogram and RT is 19.8. I know this means the PT is 19.8. i need to find what RP is 

Sep 2nd, 2015

Thank you for the opportunity to help you with your question!

RP = RT +TP

=19.8+19.8 = 39.6

Please let me know if you need any clarification. I'm always happy to answer your questions.
Sep 2nd, 2015

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