Posted by **Melvin** on Saturday, January 7, 2012 at 8:20am.

help! If you have an equilateral triangle with a line down the middle from top to bottom with T at the top and R X S at the bottom, X being in the middle and RT=6, RS=9 then RX= what?

- math -
**Reiny**, Saturday, January 7, 2012 at 8:46am
Something is not right here.

I assume your triangle is RTS, and you say it is equilateral.

Which of course means all sides are equal, but you say

RT = 6 and RS = 9

Did you mean isosceles ?

Anyway, in both equilateral and isosceles triangles, the altitude from T to the base would right-bisect the base.

So if the base = 9 , then RX = 4.5

Check your typing and the question again.

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