Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

Login

Username

Password

Not registered yet?

#1 2013-04-02 03:00:19

cooljackiec
Full Member

Offline

similar triangles?

In ,quadrilateral QRTS we have QR = 11,QS = 9 , and ST=2. Sides RQ and  ST are extended past Q and S , respectively, to meet at point P. If  PS=8 and PQ=5, then what is RT?


I see you have graph paper.
You must be plotting something
lol

#2 2013-04-02 03:04:07

anonimnystefy
Real Member

Offline

Re: similar triangles?

I would say 18.


The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

#3 2013-04-02 03:13:07

cooljackiec
Full Member

Offline

Re: similar triangles?

thanks! my teacher gives me hard hwk.

In ,

points X and Z are on AB and Y is on AC such that XY||BC and ZY||XC. If AZ=8 and , ZX=4 then what is XB ?


I see you have graph paper.
You must be plotting something
lol

#4 2013-04-02 03:16:57

anonimnystefy
Real Member

Offline

Re: similar triangles?

Do you understand why the answer is 18 for the last one?


The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

#5 2013-04-02 03:19:35

cooljackiec
Full Member

Offline

Re: similar triangles?

yah i get it. you add some extra lengths to 5 and 8 and then you get similar triangles. i did not see that at first.


I see you have graph paper.
You must be plotting something
lol

#6 2013-04-02 04:08:22

anonimnystefy
Real Member

Offline

Re: similar triangles?

Well, for the second problem, I would say the answer is 6.


The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

Board footer

Powered by FluxBB