Parallelogram abcd is a rectangle.

which statements are true?

select each correct answer.

ac⊥bd

ac=bd

ac=ab

ab⊥bc

The true statement of the parallelogram ABCD are as follows:

Parallelogram ABCD is a rectangle.

The following statements are true about parallelogram ABCD.

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Step-by-step explanation:

A parallelogram is a quadrilateral (4-sided polygon)  that has two pairs of parallel sides.  

In this sense, this figure shows a especial parallelogram called rectangle, since its four sides form right angles ().

Hence:

So, the correct choices among the given options are:

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step-by-step explanation: ; )