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Number of triangles in a polygon = number of sides-2

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Q: How do you count no of triangles are there in given triangle question?
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How many triangles exist with the given side lengths 4cm 4cm 7cm. Only one triangle No triangles or infinite triangles?

It is an isosceles triangle with 2 equal sides.


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How many triangles exist with the given side lengths 4m 4m 7m?

To determine the number of triangles that can be formed with side lengths of 4m, 4m, and 7m, we can use the triangle inequality theorem. For a triangle to exist, the sum of the lengths of any two sides must be greater than the length of the third side. In this case, 4m + 4m = 8m, which is greater than 7m. Therefore, a triangle can be formed. Since all three sides are equal in length, this triangle is an equilateral triangle. So, there is only one triangle that can be formed with side lengths of 4m, 4m, and 7m.


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