Trapezoid question algebra/geometry?
In trapezoid y1, y2, y3, y4, Each corner is at an elevation with y1 & y2 being the top of the trapezoid and y3 & y4 being the base. In my dilemma, y1=960, y2= 960.5, y3=959, y4=967.5. The height of the trapezoid is from stations where the base x2 (side of y3,y4 or bottom of trapezoid) is at station 55.73 and x1 (side of y1, y2 (or top)) is at station 0.1. I am trying to figure out a formula to determine at what station (x3) would y5=6. Can you please provide a formula using x1,x2,x3 & y1,y2,y3,y4,y5 so that I can utilize the formula for other stations and elevations?thanks in advanceCorrect my bad. I guess y6y5=6. Where y5 & y6 would be the x3 distance from x1.
