10 triangles....
pentagon
There are 5 triangles in an heptagon
4-sided pyramid.
Shapes that have fewer than 5 vertices include triangles (3 vertices), quadrilaterals such as squares and rectangles (4 vertices), and circles (0 vertices, as it is defined by its center point). These shapes are classified based on the number of corners or points that define their boundaries. Shapes with fewer vertices are typically simpler in structure and have fewer sides.
A square pyramid has 5 faces. The four side faces are triangles, and the base is in the form of a square. This pyramid has 5 vertices and 8 edges.
pentagon
There are 5 triangles in an heptagon
5 triangles are formed.
5 equilateral triangles.
5*3 - 3*4 = 15 - 12 = 3
4-sided pyramid.
A triangular prism
It has 9 edges, 5 faces and 6 vertices
It can form two quadrangles and three triangles. It has seven sides.
Imagine a house's roof -- two triangles joined by lines to their matching vertices. This gives you 6 vertices and only 5 sides.
A geometric shape that has five surfaces, eight edges, and five vertices is known as a triangular prism. A triangular prism consists of two triangular bases and three rectangular faces, resulting in a total of five surfaces. The eight edges are formed by the sides of the triangles and the connections between the triangles and rectangles. The five vertices come from the three vertices of the triangular base and the two corresponding vertices on the other base.
Shapes that have fewer than 5 vertices include triangles (3 vertices), quadrilaterals such as squares and rectangles (4 vertices), and circles (0 vertices, as it is defined by its center point). These shapes are classified based on the number of corners or points that define their boundaries. Shapes with fewer vertices are typically simpler in structure and have fewer sides.