The perimeter of an isosceles triangle is 2.5 meters and the base is 1.3 meters. Find the side of this triangle.

An isosceles triangle is a triangle with the same lateral sides. We know the base of the triangle and its perimeter, so we can find the sum of the same sides:

a + a = 2.5 m – 1.3 m = 1.2 m – the sum of the sides;

Now let’s find the side of an isosceles triangle:

a = 1.2 / 2 = 0.6 m = 60 cm

Answer: 60 cm

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