Question

What is the equation for the line of reflection that maps the trapezoid onto itself?
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Answer 1

I don't know how to approach this, I would suggest referring to your lesson

Answer 2

Whilst waiting for someone who does know how

Answer 3

It doesn't have this in my lesson :(

Answer 4

If it means a reflection that results in the same exact graph, not individual vertex locations.. you could draw a line horizontal through the middle of the shape. A reflection over that would be the same shape...