The figure below shows a “size 3” equilateral triangle divided into 9 “size 1” equilateral triangles. The figure has 6 upward facing and 3 downward facing “size 1” equilateral triangles, 3upward facing and no downward facing “size 2” triangles and 1 upward facing “size 3” triangle. It has a total of 13 equilateral
triangles of all sizes
1.13
2.14
3.36
4.16

• acc to me its 13...need to be crosschecked!
• 12 years agoHelpfull: Yes(7) No(1)
• the correct question is
  . The figure below shows a “size 3” equilateral triangle divided up into 9 “size 1” equilateral triangles. The figure has 6 upward facing and 3 downward facing “size 1” equilateral triangles, 3 upward facing and no downward facing “size2” equilateral triangles and 1 upward facing “size 3” triangle. It has a total of 13 equilateral triangles of all sizes.The following size 6 triangle is divided up in the same way. What is the
  number of triangles that has the marked point on a side or vertex.
  
• 12 years agoHelpfull: Yes(7) No(3)
• it is 16 because size 6 has 3 size 3 triangles and from fig we get 16
• 12 years agoHelpfull: Yes(2) No(0)