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In a quadrilateral ABCD, the diagonals intersect at point T. Thomas has used the Alternate Interior Angles Theorem to show that angle ADB is congruent to angle DBC and that angle DBA is congruent to BDC. Which of the following can Thomas use prove that side AB is equal to side DC?
a: AC is congruent to AC b: AC is congruent to DB c: TA is congruent to TC d: DB is congruent to DB
i think its b
because they are congruent because they both are bisecting the quadrilateral.. Im really confused
what about D?
consider triangles ABD and CBD then think
That was my second guess because they both share it
So it's D?
Can you help me with another one?
So which would it be?
D or A?
it is D
Okay thanks so much