62I dont know the answer but I am getting 20.. whidch is way too less...
it is 12+6+2
Can you explain your answer?
1/\ In this triangle, there are nine (9) little
/_\ triangles. Then there are three (3)
/\ /\ triangles which are larger (containing 4 little ones)
/_\/_\ and one (1) largest (containing all 9).
/\ /\ /\
/_\/ \/_\ 9+3+1 = 13 triangles.
so two big triangles means 26 such triangles
i found a little formula for determining the number of triangles in such a arrangement
b = Number of triangles in the base
l = Number of little triangles
f = Next largest triangle (contains 4 small triangles)
n = Next largest triangle (contains 9 small triangles)
s = Next largest triangle (contains 16 small triangles)
T = Total number of triangles
b l f n s T
1 1 0 0 0 1
2 4 1 0 0 5
3 9 3 1 0 13
4 16 7 3 1 27
30I also think there are 20 triangles! :-)
2 Big ones
2 x 3 Medium Size Ones
12 Small Ones
120 triangles cud be da answer...
1I think
Triangles = 20
Parallelograms = 21
Rhombuses = 15
What's the ans.?
1Number of triangles 20
Number of parallelograms 21
number of rhombuses 17
21
omkar
·2010-05-23 03:56:33
first count all small triangles , i.e.=12
Then count the triangles containing 4 small triangles
six corners so this type 6
Now count triangles containing 9 small triangles
this type = 2
so total triangles = 12 +6+2 =20
1357The number of triangles is 20
Think again about ur vertices argument.
21
omkar
·2010-05-23 09:12:16
edited..
i got it .. counted them twice
1I think there are 20 triangles.
