The perimeter of an isosceles triangle is 6.4 m and the side is 2.1 m. Find the base.

A triangle is three points not lying on one straight line, connected by segments.

An isosceles triangle is a triangle in which the sides are equal: AB = BC.

The perimeter of a triangle is the sum of all its sides:

P = AB + BC + AC.

In this way:

AC = P – AB – BC;

AC = 6.4 – 2.1 – 2.1 = 2.2 m.

Answer: The length of the base of the speaker is 2.2 m.

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