Only when it is an isosceles trapezoid otherwise no.
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An isosceles triangle because its base angles are equal in size
You prove that the two sides (not the bases) are equal in length. Or that the base angles are equal measure.
Its 2 equal base angles will each measure 65 degrees
Base angles are equal and so that's 2 pairs of equal angles
The two base angles are congruent or equal measure. Find one angle and use the 180 degree rule and you can find all three.