- anonymous

Angles A and C are equal to 90 degrees.
Which proportion is true?
AOB = COD
AOC = DDC
ABO = CDO
AOC = DOB

- schrodinger

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- imqwerty

is there any figure related to the question ? :P some part is missing

- anonymous

##### 1 Attachment

- anonymous

what do you mean by AO/AB etc.. ie. the / sign
its been a while since ive dealt with this

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## More answers

- anonymous

Their the angles i believe

- anonymous

|dw:1441019269636:dw|

- anonymous

remember that opposite angles are equal*

- anonymous

opposite angles can be seen with the dot

- anonymous

hence the third side of each triangle must be the same if there are two equal angles in each traingle

- anonymous

So is it C
because the triangles are similar

- anonymous

|dw:1441019528314:dw|

- anonymous

i remember writing angles like this

- anonymous

im unclear with the notation you are using

- anonymous

Ok hang on

- anonymous

- anonymous

yep here

- anonymous

i have to say it is a bit confusing asking "which proportion is true?" and given no proportions

- anonymous

also labelling angles as A and C, then what are the other bits "AOB = COD" for example? are those angles? if so, they are the same angle "O"

- anonymous

can you post a screenshot of the question?

- imqwerty

can u prove the 2 triangles similar ?

- anonymous

i don't think thats required...
i'm sure from my distant knowledge its similar triangles because of AAA

- anonymous

all angles are equal?

- anonymous

not to repeat myself, but i think the entire question is unclear based on the wording of the possible answers

- anonymous

perhaps our thoughts will be answered when we get a much more clear idea with what we need to answer

- anonymous

that is often the case!

- anonymous

haha!

- anonymous

@ChrystalC are you stuck?

- anonymous

no i got the answer
thanks

- anonymous

: )

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