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Mathematics, 16.01.2020 17:31 lmorace

Which sequence could be used to prove that ad = bc?
first prove abc is congruent to cda, and then state ad and bc are corresponding sides of the triangles.
first prove abc is similar to cda, and then state ad and bc are opposite sides of the parallelograms.
first prove abcd is congruent to cdab, and then state ad and bc are corresponding sides of two parallelograms.
first prove abcd is similar to cdab, and then state ad and bc are opposite sides of the parallelograms.

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Which sequence could be used to prove that ad = bc?
first prove abc is congruent to cda, and...
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