Open Middle: Trapezoid Area Problem

Creation of this resource was inspired by this Open Middle problem from Patrick McGowan.
[size=150] Source: [url=https://www.openmiddle.com/]Open Middle website[/url][/size]
Move the LARGE POINTS to create different trapezoids with fixed perimeter = 46 units. If the trapezoid disappears, make it smaller so it reappears.
What maximum possible area did you find? What were the dimensions of this trapezoid?
[b]Math Teachers:[/b][br][br]For a version of this problem [i][b]where you can choose your own fixed perimeter[/b][/i], [url=https://www.geogebra.org/m/yh5dpkxr]click here[/url].

Information: Open Middle: Trapezoid Area Problem