+61 
Could someone please help? Please show work or explain how you got it.
+118667 No three of these points are collinear. (in a line) so if you choose any 3 points you will make a triangle.
There are 7 dots so there are 7C3 ways to choose three of them to form a triangle. (the C actually stands for combinations, or in my thoughts, choose)
7C3 = 35 ways
