If one side of an isosceles triangle is 4cm and the other is 9cm, find the perimeter of the isosceles triangle

4+4

There is an isosceles triangle. One side is 9cm long and the other is 4cm long. What is the circumference of this isosceles triangle?

According to the triangle theorem, if the sum of two sides is greater than the third side, we can know that 4 cannot be the waist of the triangle
So the waist can only be the side of 9
So the side length of this isosceles triangle is 2x9 + 4 = 22cm

The length of the base of an isosceles triangle is 10 cm. The middle line of one waist divides the perimeter of the triangle into two parts. One part is 4 cm longer than the other part. The waist length is calculated

Let the waist length be a 10 + 0.5a-1.5a = 4 and a = 6

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