# SOLUTION: I need to write an indirect proof for this problem: Given- AB is not equal to DE & AC is congruent to CD Prove measure of angle B is not equal to measure of angle e there is a

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 Click here to see ALL problems on Geometry proofs Question 117985: I need to write an indirect proof for this problem: Given- AB is not equal to DE & AC is congruent to CD Prove measure of angle B is not equal to measure of angle e there is a picture of two triangles facing each other and sharing one point- the tops of each triangle and the letters read from left to right- top left point A, middle point where both triangles meet point C, then next top point is point D, lower right point E, then C again, lower left point is point B. Sorry if that isn't enought info. but thanks for your help.Answer by Edwin McCravy(8909)   (Show Source): You can put this solution on YOUR website!I need to write an indirect proof for this problem: Given- AB is not equal to DE & AC is congruent to CD Prove measure of angle B is not equal to measure of angle E there is a picture of two triangles facing each other and sharing one point- the tops of each triangle and the letters read from left to right- top left point A, middle point where both triangles meet point C, then next top point is point D, lower right point E, then C again, lower left point is point B. Sorry if that isn't enought info. but thanks for your help. ``` 1. Assume for contradiction that mÐB = mÐE 2. AC @ CD Given 3. mÐACB = mÐDCE (opposite or vertical angles) 4. DACB @ DDCE (ASA, angle-side-angle by 1,2,and 3) 5. AB = DE (corresponding sides of congruent triangles) 6. AB m DE (given) 7. 5 and 6 contradict each other. 8. mÐB = mÐE (assumption in step 1 is false.) Edwin```