Answer : Total number of sides in a decagon = 10 We know that number of vertices in triangle = 3
So, out of 10 vertices we have to choose 3 vertices. Therefore,
Total number of triangles in a decagon
Total number of triangles = 120
Answer : Total number of sides in a decagon = 10 We know that number of vertices in triangle = 3
So, out of 10 vertices we have to choose 3 vertices. Therefore,
Total number of triangles in a decagon
Total number of triangles = 120