A trapezoid normally has no congruent sides
By definition, all trapezoids must have one pair of parallel sides. Therefore, an isosceles has one pair of congruent angles.
Two of the end sides.
A parallelogram has two pairs of congruent sides.
A trapezoid has one pair of parallel sides.
2 pairs
One pair
A trapezoid normally has no congruent sides
By definition, all trapezoids must have one pair of parallel sides. Therefore, an isosceles has one pair of congruent angles.
The two outer sides
Two of the end sides.
A parallelogram has two pairs of congruent sides.
1 pair
2 pairs, the sides opposite each other are congruent to each other
A trapezoid has one pair of parallel sides.
Infinitely many.
2