Colorful triangle
Geometry
Level
3
How many triangles are there in the picture above?
12
11
7
10
8
9
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
I will refer to the coloured portions by the name of their colour. Our 11 triangles then are:
Green
Yellow
Purple
Brown
Red, Purple
Yellow, Red
Purple, Red, Green
Purple, Pink, Brown
Green, Blue, Brown
Red, Purple, Yellow, Brown
The entire triangle.