Question

The figure below shows a rectangle ABCD having diagonals AC and DB.

A rectangle ABCD is shown with diagonals AC and BD.
Zinnia wrote the following proof to show that the diagonals of rectangle ABCD are congruent.

Zinnia’s proof:
Statement 1: In triangle ADC and BCD, AD = BC (opposite sides of a rectangle are congruent)
Statement 2: Angle ADC = Angle BCD (angles of a rectangle are 90°)
Statement 3: DC = DC (reflexive property of equality)
Statement 4: Triangle ADC and BCD are congruent (by ASA postulate)
Statement 5: AC = BD (by CPCTC)
Which statement in Zinnia’s proof has an

Answer 1

@Ledah @rebeccaskell94 can you guys pleaseee help?

Answer 2

Da frappe? o_o

Answer 3

:(

Answer 4

I do not know, sir.

Answer 5

Thanks anyway mayum:)

Answer 6

What was the very last part supposed to say? You end with "Which statement in Zinnia’s proof has an "

Answer 7

an error

Answer 8

I believe that would be statement 4 then. It relies on the ASA postulate. This is not the postulate you want to use. What do you think the correct postulate is?

Answer 9

Im not sure:/

Answer 10

Look at this diagram. It may help you. Can you make a guess now?