A trapezoid may have zero or one pair of congruent sides.
A trapezoid normally has no congruent sides
Two of the end sides.
Many things have 2 sides that are congruent, including isoceles triangles, any regular polygons or polyhedrons, rectangles, etc.
It has to have at least 2 congruent angles and/or sides to be isosceles. Therefore, an equilateral angle would be isosceles.
A trapezoid may have zero or one pair of congruent sides.
A trapezoid normally has no congruent sides
two because isosceles triangles have two congruent sides
The two outer sides
Two of the end sides.
2 pairs
Many things have 2 sides that are congruent, including isoceles triangles, any regular polygons or polyhedrons, rectangles, etc.
1 pair
One pair
An isosceles triangle has two congruent sides.
It has to have at least 2 congruent angles and/or sides to be isosceles. Therefore, an equilateral angle would be isosceles.
Normally none unless it is an isosceles trapezoid then it will have 2 equal end sides of the same lengths