Hey there! 
Your answer is 0. 
All the angles of a triangle must add up to 180 degrees. 
However, the sum of these angles is not equal to 180 degrees. 
70 + 70 + 70 = 210 
210 is not equal to 180.
Hence, no triangles can be made using the angles 70, 70, and 70. 
Hope this helps!