No its parallel bases can never be equal in length. But if it is in the form of an isosceles trapezoid then its slanted sides are equal in length.
22 mertes. And the trapezoid does not have to be isosceles.
The length of its median will be the same length as its line of symmetry.
135.15 sq. cm
You prove that the two sides (not the bases) are equal in length. Or that the base angles are equal measure.