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You prove that the two sides (not the bases) are equal in length. Or that the base angles are equal measure.

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Q: How do you prove that a trapezoid is isosceles?
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Related questions

Is a trapezoid always an isosceles trapezoid?

No, not every trapezoid is an isosceles trapezoid.


What trapezoid is a trapezoid with congruent legs?

An isosceles trapezoid


Is an isosceles trapezoid symmetrical?

Yes, an isosceles trapezoid is symmetrical.


How is an isosceles triangle related to an isosceles trapezoid?

how is an isoscelels trapezoid related to a isosceles triangle


What is the same about an isosceles triangle and an isosceles trapezoid?

In an isosceles triangle and an isosceles trapezoid, both base angles are congruent


The diagonal an isosceles trapezoid are what?

The diagonals of an isosceles trapezoid are equal in lengths


Difference with trapezoid and 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.


How is the isosceles trapezoid related to the isosceles triangle?

If you extend the two legs of an isosceles trapezoid until they intersect, you get an isosceles triangle.


Is a trapezoid an isosceles trapezoid?

No. It can be but need not be.


What is the meaning of an isosceles trapezoid?

what is isosceles


Which angles are congruent in an isosceles trapezoid?

The base angles are congruent in an isosceles trapezoid


A triangle or trapezoid with two congruent sides is?

An isosceles triangle and a isosceles trapezoid.