look at this convex polygon. how many triangles are formed by drawing all the diagonals from a single vertex?
look at this convex polygon. how many triangles are formed by drawing all the diagonals from a single vertex?
Answer
Explanation:
Step1: Identify polygon type
The polygon has 4 sides, it's a quadrilateral.
Step2: Use formula for number of triangles
The number of triangles formed by drawing diagonals from a single - vertex of an $n$-sided polygon is $n - 2$. Here $n=4$. So, $4 - 2=2$.
Answer:
2