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Mathematics 9 Online
OpenStudy (anonymous):

i need more help

OpenStudy (anonymous):

OpenStudy (anonymous):

i'm not good with triangles at all. i think its B

OpenStudy (zehanz):

Well, the two triangles have the top angle in common, so that's one. There are also two parallel sides. What does this mean for the angles these lines form?

OpenStudy (anonymous):

SAS?

OpenStudy (anonymous):

so its C?

OpenStudy (zehanz):

There is no information about the sides, that is, not enough: the small triangle has 10 and 20, the large one has 15 and ??? So it can't be sas. In the attached image, there are two parallel lines, and a third on, making angles. What do you know of the angles I've drawn there?

OpenStudy (anonymous):

so D?

OpenStudy (zehanz):

Try not to switch from answer to answer all the time. Did you look at the image in the explanation above? What do you know of the two angles there?

OpenStudy (zehanz):

@vivianrush: are you still interested?

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