Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
How many triangles are formed..... read the details?
How many triangles are formed by drawing all of the diagonals from a single vertex of a polygon with each number of sides? How many diagonals can be drawn from a single vertex, in each case?
the following number of triangles are located here
1. 9 triangles
2. 12 Triangles
3. 19 triangles
4. 120 Triangles
2 Answers
- Anonymous10 years agoFavorite Answer
I don't completely understand your question, as you seem to be giving the answers. But the number of triangles will always be 2 less than the number of sides. The number of diagonals will be 3 less than the number of sides.
1. 9 triangles - 11 sides, 8 diagonals.
2. 12 Triangles - 14 sides, 11 diagonals.
3. 19 triangles - 21 sides, 18 diagonals.
4. 120 Triangles - 122 sides, 119 diagonals.
- BattleaxeLv 710 years ago
The number of triangles that can be formed by drawing all of the diagonals from a single vertex is n - 3, where n is the number of sides in the polygon.
The polygon corresponding to the number of triangles is:
1) 9 triangles, 12 sides
2) 12 triangles, 15 sides
3) 19 triangles, 22 sides
4) 120 triangles, 123 sides
- .--
