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Earn +20 ptsQ: Which expression describes the number of triangles in figure n?
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Which expression describes the total number of triangles in figure n?
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.
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
What is the expression that describes the sequence 4 6 8 10?
N= term number, your equation would be: 2N+2
How many number of triangles in a quadrilateral?
Two triangles
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