The diagonals of an isosceles trapezoid are equal in lengths
No, it is not.
No, not every trapezoid is an isosceles trapezoid.
A trapezoid with congruent legs is known as an isosceles trapezoid. In this type of trapezoid, the non-parallel sides (legs) are equal in length, which also implies that the base angles are congruent. This symmetry gives the isosceles trapezoid its distinct shape and properties, such as diagonal lengths being equal. The parallel sides are referred to as the bases.
An isosceles trapezoid
Yes, an isosceles trapezoid is symmetrical.
how is an isoscelels trapezoid related to a isosceles triangle
In an isosceles triangle and an isosceles trapezoid, both base angles are congruent
Quite simply providing that it is an isosceles trapezoid otherwise you'll need to know the lengths of the 2 diagonals
If the two sides which are not parallel have equal lengths, then the trapezoid is called an isosceles trapezoid (standard trapezoid has unequal sides). The base angles in an isosceles trapezoid are equal in measurement, also I know that a trapezoid with two nonparallel sides the same length is called an isosceles trapezoid.
If you extend the two legs of an isosceles trapezoid until they intersect, you get an isosceles triangle.
what is isosceles
No. It can be but need not be.