# The perimeter of an isosceles triangle is 18 cm. Find a side and draw a triangle.

To solve this task, you need to find the value of the sides of an isosceles triangle;
Consider this task and analyze it;

According to the condition of the task, we are given an isosceles triangle with a perimeter of eighteen centimeters, it is necessary to find the value of all sides of this triangle.

Let’s remember what a perimeter is;

The perimeter is the sum of the lengths of all sides.

In an isosceles triangle, the two sides are equal;

Let’s designate the sides of the triangle by the letters “x” and “y”, then;

2x + y = 18;

Find the side of the base;

y = 18 – 2x = 2 * (9 – x);

The sides are equal;

x = (18 – y) / 2. One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.