Can anybody do geometry?
(AMC8, 2008) Square ABCD has sides of length 3. Segments CM and CN divide the square's area into three equal parts. How long is segment CM?

A. √10 B. √12 C. √13 D. √15

answer: 0+0=0

step-by-step explanation:

that is the only answer that can make 0

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

i believe it is b and c. (side note, i got the same computer from k-12 lol i’m in 8th grade and this is my first year, will it get

step-by-step explanation: