30 of them
You could draw four different triangles in a 4-sided polygon, but two are enough to define the polygon.
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A ten-sided polygon is called a decagon.
An infinite number. Just when you think you are done, pick any triangle, draw a line from any of its vertices to the opposite side and you have spilt that triangle in two. As a result the number of triangles is increased by one. You think you are done? Pick any triangle, ...
To calculate this, you must find out how many triangles you can draw into the shape. Do this by taking the total number of sides (s) and taking away 2. This leaves you with how many triangles you can draw in the shape (t) from one vertex to another. (Not including outside lines!). Then, multiply the number of triangles in the shape by 180. This leaves you with how many degrees are inside that shape. (a)t = s-2a = t X 180This means there are 1800 degrees in a 12 sided polygon.
You could draw four different triangles in a 4-sided polygon, but two are enough to define the polygon.
The name of a 20 sided polygon is Icosagon.
An equilateral triangle. ►
Yyghhii
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A ten-sided polygon is called a decagon.
An infinite number. Just when you think you are done, pick any triangle, draw a line from any of its vertices to the opposite side and you have spilt that triangle in two. As a result the number of triangles is increased by one. You think you are done? Pick any triangle, ...
Draw a nine sided polygon.
To calculate this, you must find out how many triangles you can draw into the shape. Do this by taking the total number of sides (s) and taking away 2. This leaves you with how many triangles you can draw in the shape (t) from one vertex to another. (Not including outside lines!). Then, multiply the number of triangles in the shape by 180. This leaves you with how many degrees are inside that shape. (a)t = s-2a = t X 180This means there are 1800 degrees in a 12 sided polygon.
A person can draw a five-sided polygon by drawing a pentagon. This is the figure that looks like a house.
By looking at other polygons with less sides, we can see how many triangles they can fit. In a 4-sided polygon (square), you can fit 2 triangles. In a 5-sided polygon (pentagon), you can fit 3 triangles. In a 6-sided polygon (hexagon), you can fit 4 triangles. In an 8-sided polygon (octagon), you can fit 6 triangles. The pattern here is the number of triangles is equal to the number of sides minus 2. T = N - 2 So... 50 - 2 = 48. 48 triangles can fit into a 50-sided polygon.
A 5-sided polygon is called a pentagon. You can draw up to 5 diagonals in a pentagon.