Which pair of equations is correct?

x = 70 and y = 55

x = 3 and y = 65

x = 4 and y = 4

x = 4 and y = 50

Question

Which pair of equations is correct?

 x = 70 and y = 55

 x = 3 and y = 65

 x = 4 and y = 4

 x = 4 and y = 50

anonymous · Answer

attachment

anonymous · Answer

@hartnn @jim_thompson5910 Can one of you help?

hartnn · Answer

you know the concept of similar triangles ?

hartnn · Answer

infact, congruent triangles ?

anonymous · Answer

Postulates or what?

hartnn · Answer

when triangles re congruent, their sides are equal
know this ?

anonymous · Answer

Yeah.

hartnn · Answer

so can u prove those triangles congruent first ?

anonymous · Answer

No you need the values of x and y to find the side lengths to identify concurrency.

hartnn · Answer

do you know about AAS test for congruency ? 
and one side is indeed given equal, if you look, by that small line mark

anonymous · Answer

Oh. Yeah. So we know they're congurent.

hartnn · Answer

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