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The expression that describes the total number of triangles in figure n is n(n+1)(n+2)/6. This can be derived using the formula for calculating the sum of the first n natural numbers, which is n(n+1)/2, and then multiplying it by (n+2)/3 to account for the different possible combinations of vertices in a triangle.
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Which expression describes the number of triangles in figure n?
Since there is no figure n, the number of triangles in it is described by the expression 0.
Can a isoceles triangle be a polygon?
A polygon is a plane figure bounded by a finite number of straight lines. To enclose an area then a minimum of three straight lines are required. All triangles, not just isosceles triangles, are polygons.
What best describes the English expression two more than the quantity of a number minus seven?
x - 5
How many number of triangles in a quadrilateral?
Two triangles
How many number of triangles in a pentagon?
3 triangles
Which expression describes the number of triangles in figure n?
Since there is no figure n, the number of triangles in it is described by the expression 0.
How do you find the no of triangle in a figure?
It is: number of sides -2 = number of triangles
What algebaric expression describes halving the number?
The number is x..5*xorx/2
Can a five sided figure be made from tree triangles and why?
Yes, because the number of triangles that are formed in a polygon is 2 less than the numbers of its sides.
What best describes the algebraic expression 13x-4?
The difference of thirteen times a number and four.
What best describes the English expression the product of nine and a number minus five?
9(x-5)
What is the product of 50 and the number of employees?
Which phrase describes the variable expression 6.w
How many triangles in an undecagon?
There are 11 triangles in an undecagon. The number of sides of a polygon is the number of triangles it has.
Can a isoceles triangle be a polygon?
A polygon is a plane figure bounded by a finite number of straight lines. To enclose an area then a minimum of three straight lines are required. All triangles, not just isosceles triangles, are polygons.
How many triangles are in a 26 sided polygon?
To determine the number of triangles in a polygon, we can use the formula n(n-1)(n-2)/6, where n is the number of sides of the polygon. For a 26-sided polygon, the formula would be 26(26-1)(26-2)/6. Simplifying this expression, we get 262524/6 = 10400 triangles.
Which of the following best describes the algebraic expression 15x plus 8?
The sum of fifteen times a number and eight.
What best describes the English expression two more than the quantity of a number minus seven?
x - 5
