Browse · harp
Printjmc
counting and probability junior
Problem
How many triangles are in this figure? (Some triangles may overlap other triangles.) 
(A)
(B)
(C)
(D)
(E)
Solution
By inspection, we have that there triangles: Each of the small triangles, medium triangle made of the rightmost two small triangles, and the large triangle.
Final answer
E