The figure below shows two congruent triangular parks. What equation would help you to solve for the side length of BC and EF? Explain your reasoning using complete sentences. Triangles ABC and DEF are shown. Side AB is 12. Side BC is 3x minus 15. Side AC is 10. Side DE is 12. Side EF is x minus 1. Side FD is 10.

Question

The figure below shows two congruent triangular parks. What equation would help you to solve for the side length of BC and EF? Explain your reasoning using complete sentences.  Triangles ABC and DEF are shown. Side AB is 12. Side BC is 3x minus 15. Side AC is 10. Side DE is 12. Side EF is x minus 1. Side FD is 10.

wolf1728 · Answer

Is there a graphic with that problem?
If not I might be able to draw it.

wolf1728 · Answer

attachment

wolf1728 · Answer

According to the graphic 
3x - 15 = x -1 
2x = 14 
x = 7 

So side BC = 3x -15
BC = 21 -15
BC = 6

Side EF = x-1
Side EF = 7-1
Side EF = 6

anonymous · Answer

Thank you very much. You've helped me alot!