What is the difference of a trapezoid and an isosceles trapezoid

The video tutorial covers the basic properties of trapezoids, focusing on the distinction between regular and isosceles trapezoids. It explains that trapezoids have one pair of parallel sides, called bases, and the other sides are called legs. The tutorial emphasizes the characteristics of isosceles trapezoids, which have congruent opposite sides and angles, and equal diagonals. It also highlights that unlike parallelograms, the diagonals of trapezoids do not bisect each other. The session concludes with a brief mention of the mid-segment theorem.

What are the names given to the parallel sides of a trapezoid?

Explain why opposite angles in an isosceles trapezoid are congruent.