Triangles are geometric figures, especially polygons with three sides. Every triangle has a vertex, which is the intersection of the two sides of the triangle. This vertex is associated with the base on the opposite side. The base also has a height that is perpendicular to the base and passes through the top.
All of these will give rise to different possible measurements, including side length measurement, angle measurement (in all cases, the sum of the angles of the triangle is equal to 180 degrees), circumference measurement, and square measurement. Height or the area or measurement of the area of a triangle. For now, we will focus on the triangular area. How to calculate it?
Several methods
Indeed, there are several ways to calculate the area of a triangle. In the latter, we have the classic formula A = bxh / 2, where A = area, b = my base, and h = height. Therefore, it is necessary to know how to distinguish the base and height. Usually, the base of the triangle corresponds to the side on which it is docked. Since the base of the triangle can be one of the three sides, it is usually clearly stated in the statement of the subject to be treated by elementary school students.
In any case, there can only be one height and one bottom surface. You might say that this is not the case for equilateral triangles. As a reminder, an equilateral triangle is a triangle with three sides of the same length and three same angles at 60°. In other words, there may be three of the same base and three of the same height, but in the end, you will always have only one value for the base and only one for the height.
Still usually, the height of a triangle corresponds to the length of the line perpendicular to the bottom side connecting the vertices of the triangle (a line will not initially appear in the triangle, but you will draw a line to measure the height). Please note that if it is an obtuse, obtuse or double bevel triangle, one of which is greater than 90°, the line should not be drawn inside the triangle, but should be drawn outside the triangle. It must always be perpendicular to the base, but it will start from the top to connect the continuity of the base (not shown in the picture).
However, if you don’t want to mess up the story of these bottom lines and heights, you can still use another formula called the Heron formula. With this formula you only need to know the length of the three sides of the triangle. By adding these lengths (a + b + c), you will get the perimeter (p) of the triangle. The area (A) of the triangle corresponds to the square root of p(pa)(pb)(pc)/16.