Question

периметр трикутника дорівнює 18 см дві сторони трикутника дорівнюють по 7 см знайди довжину третьої сторони трикутника.як називають такий трикутник?​

Answer 1

Ответ:

Пошаговое объяснение:

Равнобедренный

18-(7×2)=4см 3 сторона

Answer 2

Ответ:

7 см

Пошаговое объяснение:

18-(7+7)=4 см довжина третьої сторони

Це трикутник рівнобедрений.

Answer 3

Perimeter of a Triangle

To find the length of the third side of a triangle, we need to use the concept of the perimeter of a triangle. The perimeter of a triangle is the sum of the lengths of all three sides.

In this case, we are given that the perimeter of the triangle is 18 cm and two sides of the triangle are 7 cm each. We need to find the length of the third side.

Let's denote the length of the third side as 'x'. According to the given information, we can set up the following equation:

7 cm + 7 cm + x = 18 cm

Simplifying the equation, we have:

14 cm + x = 18 cm

To find the value of 'x', we can subtract 14 cm from both sides of the equation:

x = 18 cm - 14 cm

x = 4 cm

Therefore, the length of the third side of the triangle is 4 cm.

As for the name of this type of triangle, we can determine it based on the lengths of its sides. Since all three sides of this triangle are of different lengths, it is called a scalene triangle. A scalene triangle is a triangle in which all three sides have different lengths.

I hope this helps! Let me know if you have any further questions.