No, not every trapezoid is an isosceles trapezoid.
Not normally but quite possible in the form of an isosceles trapezoid.
An isosceles trapezoid
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.
Not for all trap. Only for an isosceles trapezoid. Well, for an Isosceles trapezoid, it could be any of the two diagonals! In order to have an isosceles trapezoid with the diagonals equal, the isosceles part MUST be precise and specific.
An isosceles triangle and a isosceles trapezoid.
yes! But only an isosceles Trapezoid.
Not always but sometimes
If you want to, you can always draw a circle around an isosceles trapezoid and the radius can be half the base of the trapezoid.
no
yes, it would always be
Only when it is an isosceles trapezoid.
yes
Yes, always.
Only as in the form of an isosceles trapezoid are its diagonals congruent.
Not normally but quite possible in the form of an isosceles trapezoid.
They are, yes.
An isosceles trapezoid