Need geometry help bad!

Question

anonymous · Answer

1. Which postulate or theorem can you use to prove that triangleABC triangleCDA? http://i.imgur.com/tIo4XGH.jpg a. ASA b. SAS c. SSS d. Not enough information. 2. Which postulate or theorem can you use to prove that triangleABC triangleEDC? http://i.imgur.com/bq9HAFH.jpg A. ASA b. SAS c. SSS d. Not enough information 3. Question : What additional congruence do you need in order to prove that triangleABE triangleDBC? http://i.imgur.com/bq9HAFH.jpg a. angE = angD b. angABE = andDBC c. angA = andC b. angA = angD 4. What additional congruence do you need and what postulate can you use to prove that triangleABD triangleCBD by the SAS congruence postulate? http://i.imgur.com/uvCJw0B.jpg a. lineAB = lineBC by SAS b. lineAD = lineDC by SAS c. lineAb = lineBC by SSS d. lineAD = lineDC by SSS

anonymous · Answer

1 is ASA

anonymous · Answer

2 is not enough information as you only have a side and angle congruent, which isn't enough for congruency of triangles

anonymous · Answer

1. AAS
2. Not enough info
4. Not enoug info

anonymous · Answer

3 is angle A and angle D

anonymous · Answer

Okay, so far numbers 2 and 3 I had right.  Number 1 was bugging me and number 4, I just can't figure it out.  Thank you so much.

anonymous · Answer

As for number 1, |dw:1383812052044:dw| you use the fact that angle DBA = BCA and AC = CA and angle DCA = angle BAC