Given AS bisects ∠RST and is a perpendicular bisector to RT. Which triangle congruence theorem can be used to prove ∆RAS≅∆TAS? Show your work.

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the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this