choose the best selection for the quadrilateral with vertices at the following points: (0,0), (0,4), (8,4), (8,0)

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles. i'm desperate.

Complete each statement from the information given and the triangle criterion you used. if the triangles cannot be shown to be congruent, leave the box for the second triangle blank and choose for reason “cannot be determined.” carbon - regular hexagon. ∆can ≅ ∆ by

Plz : denver is about 5,200 feet above sea level. which number line best represents this integer?