In a 3×3 grid of points, many triangles can be formed using 3 of the points as vertices?
Three such triangles are shown below.
Of all these possible triangles, how many have all three sides of different lengths?
In a 3×3 grid of points, many triangles can be formed using 3 of the points as vertices?
Three such triangles are shown below.
Of all these possible triangles, how many have all three sides of different lengths?