Two angles must be equal and when added to the third angle should total 180 degrees.
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The base angles of an isosceles trapezoid are congruent
Every Trapezoid has 4 angles.An isosceles trapezoid has 2 acute angles.?
They can be as for example in an isosceles trapezoid.
An isosceles trapezoid
By definition, all trapezoids must have one pair of parallel sides. Therefore, an isosceles has one pair of congruent angles.