## max1409 one year ago Prove that a rectangle has congruent diagonals. Be sure to create and name the appropriate geometric figures.

1. max1409

2. max1409

?

3. anonymous

is there a figure or picture?

4. max1409

no picture

5. anonymous

|dw:1438182435865:dw|

6. max1409

k

7. anonymous

screen prine the problem and send it to me

8. anonymous

screen print**

9. max1409

where is nothing in the problem only words

10. welshfella

|dw:1438182568066:dw|

11. anonymous

okay

12. welshfella

you need to prove that the triangles AEB and CED are congruent

13. anonymous

$AB \left| \right| CD$

14. max1409

pythagorean theorem

15. max1409

right?

16. anonymous

yeah listen to welshfella im too busy

17. max1409

k

18. max1409

so what should i write

19. max1409

welsh?

20. welshfella

AB and CD are congruent (opposite side of a rectangle) and angle BAD is congruent to < ADC (interior alternate angles) also < abc congruent to < BCD ( smae reason)

21. max1409

k

22. max1409

23. welshfella

r u form the US?

24. max1409

yes

25. max1409

currently on vacation in moscow

26. welshfella

you need to write that AB parallel to CD before what I wrote

27. max1409

AB parallel to CD before what I wrote AB and CD are congruent (opposite side of a rectangle) and angle BAD is congruent to < ADC (interior alternate angles) also < abc congruent to < BCD ( same reason)

28. max1409

can i put this as my answer?

29. welshfella

oh OK standards for geometric proofs in US are different from UK ( where I am) so you are getting the UK version!

30. max1409

k thx

31. max1409

should i keep the stuff in prenteses

32. max1409

p;ease tell me quick i have to go?

33. welshfella

yes - that would be OK in UK the next line would be Therefore triangles AEB and CED are congruent ( 2 angles and the corresponding side) - i think thats ASA in the US.

34. welshfella

so AE = ED and CE = EB and therfore AD = CB

35. welshfella

thats it

36. max1409

k should i keep stuff in the ()

37. welshfella

yes

38. max1409

?

39. max1409

k thx

40. welshfella

yw