Question

СТОРОНА ТРИУГЛЬНИКА АВС РАВНЫ 12 СМ,16 СМ И 18 СМ НАЙДИТЕ ПИРИМЕТР ТРЕУГОЛЬНИКА С ВЕРШИНАМИ КОТОРОГО ЯВЛ.СЕРЕДИНЫ СТОРОН ДАННОГО ТРИУГОЛЬНИКА.

Answer 1

Каждая сторона нового треугольника является средней линией и поэтому вдвое меньше соответствующей стороны. периметр тоже уменьшается в 2 раза  (12+16+18) : 2 = 23

Ответ  23 см.

Answer 2

Finding the Perimeter of a Triangle

To find the perimeter of a triangle with sides of 12 cm, 16 cm, and 18 cm, we simply add the lengths of all three sides together.

Perimeter of the triangle ABC: \[12 + 16 + 18 = 46 \, \text{cm}\]

So, the perimeter of the triangle ABC is 46 cm.

Midpoints of the Sides of the Triangle

To find the midpoints of the sides of the given triangle, we can use the midpoint formula, which states that the coordinates of the midpoint of a line segment with endpoints \((x_1, y_1)\) and \((x_2, y_2)\) are given by:

\[ \left( \frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2} \right) \]

Using this formula, we can find the midpoints of the sides of the triangle.

1. Midpoint of side AB: - Coordinates of A: (x1, y1) - Coordinates of B: (x2, y2) - Midpoint coordinates: \(\left( \frac{x1 + x2}{2}, \frac{y1 + y2}{2} \right)\)

2. Midpoint of side BC: - Coordinates of B: (x1, y1) - Coordinates of C: (x2, y2) - Midpoint coordinates: \(\left( \frac{x1 + x2}{2}, \frac{y1 + y2}{2} \right)\)

3. Midpoint of side AC: - Coordinates of A: (x1, y1) - Coordinates of C: (x2, y2) - Midpoint coordinates: \(\left( \frac{x1 + x2}{2}, \frac{y1 + y2}{2} \right)\)

By using the given coordinates of the vertices of the triangle, we can calculate the midpoints of the sides.

Let me know if you need further assistance with this!