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Geometry question

  • #1
ABC is an equilateral triangle with an area of 1 square cm.
C' is the middle of [AB].

i have to prove that AC^2 = 4 * sqrt(3) / 3

how?
 

Answers and Replies

  • #2
46
0
use s = (a+b+c)/2 and area = {s*(s-a)*(s-b)*(s-c)}^2
where a = b = c = x (say)
 
  • #3
346
2
i know this aint helping but since the question is also on triangle can i ask how u prove ratio theorm?
 
  • #4
46
0
ratio theorem ?? as in simillar triangles ??
 
  • #5
5
0
Write CC' (triangle height) in terms of length AC, then solve using triangle area equation.
 

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