What is an isosceles trapezoid. The video goes over the properties that are unique to an isosceles trapezoid.
:12 Properties of an isosceles triangle explained (Quadrilateral with two parallel sides and two non-parallel sides)
:43 Unique properties of an isosceles trapezoid
1:02 Angles of an isosceles triangle explained
1:29 How to find the angle measure of an isosceles triangle explained
2:17 Explanation of complementary and supplementary angles of an isosceles trapezoid