10c5
Infinite shapes can fit into a circle. This is because a circle can be considered a 2D surface and there are an infinite number of possible shapes that can be created within that surface, such as triangles, squares, pentagons, and so on.
Square Rectangle
It consists of 98 triangles and has 4850 diagonals
The circle doesn't fit because it is a curve. The other figures are drawn with line segments; they're polygons. In fact, the other figures are all quadrilaterals.
To determine how many heptagons can be formed by joining the vertices of a 10-sided polygon, we can use the combination formula. Specifically, we need to choose 7 vertices from the 10 available. This is calculated as ( \binom{10}{7} ), which is equal to ( \binom{10}{3} ) (since choosing 7 vertices to include is the same as choosing 3 vertices to exclude). Thus, ( \binom{10}{3} = \frac{10!}{3!(10-3)!} = 120 ). Therefore, 120 heptagons can be drawn by joining the vertices of a 10-sided polygon.
10c5
a draipipe
Isohytes are lines drawn on maps joining places of equal rainfall.
isonephs
120
21
Infinite shapes can fit into a circle. This is because a circle can be considered a 2D surface and there are an infinite number of possible shapes that can be created within that surface, such as triangles, squares, pentagons, and so on.
5
A straight line segment can be drawn joining any two points.
isosceles triangle
The line joining the feet of the perpendiculars drawn from all the points of the line onto a preselected plane.
Square Rectangle