They are both 4 sided quadrilaterals
No.
No.
yes
how is an isoscelels trapezoid related to a isosceles triangle
No, but they are both 4 sided quadrilaterals.
rectangle, rhombus, parallelogram, trapezoid, isosceles trapezoid, kite ... etc
No. A parallelogram by definition has two pairs of parallel sides. A trapezoid by definition has only one pair of parallel sides.
A trapezoid can also be a parallelogram if its non-parallel sides are of equal length.
If you extend the two legs of an isosceles trapezoid until they intersect, you get an isosceles triangle.
Nope A square is a parallelogram By definition a trapezoid is a quadrilateral with only one pair of sides parallel
An isosceles trapezoid fits the description
rhombus, parallelogram and an isosceles trapezoid