What is a triangle?

A field bounded by three arms is called a triangle. According to Euclidean geometry, one and only one triangle can be drawn by three points which are not located in the same straight line. In other words, a polygon that has only three sides and three vertices is called a triangle. The vertex of a triangle refers to the point at which any two of its sides meet. Considering the number of sides, the triangle is the lowest polygon, that is, there is no polygon whose number of sides is less than three. The sum of the three angles of a triangle is two right angles or 180. Although it is a bit difficult to specify the number of types of triangles, the following is a list of the number of triangles that are usually found by considering the types of triangles by arm, types of triangles by angle and other features of triangles. In the figure, different types of triangles are seen. Equilateral triangles are common forms of all triangles. That is, other triangles are formed due to some features of the equilateral triangle. For example, if two sides of an isosceles triangle are equal to each other, then it becomes an isosceles triangle. A triangle whose only two sides are equal is called an isosceles triangle.

Again, in some cases it is said that at least two sides of a triangle are equal to each other, hence an isosceles triangle. In this case, all equilateral triangles can be called isosceles triangles. In other words, a triangle whose two angles are equal to each other is called an isosceles triangle. If the value of any one angle of an isosceles triangle is known, the measurement of the other two angles can be determined. In the figure, an isosceles triangle is seen. If the lengths of the three sides of a triangle are equal to each other, it is called an equilateral triangle. It is a balanced triangle because the lengths of its three arms are equal to each other. Again, the lengths of its three arms are equal, so the three angles are equal to each other. In the figure, an equilateral triangle is seen. In other words, a triangle whose angles are three equal to each other is called an equilateral triangle. The sum of the triangles of the triangle is 180. As a result, if the angles are equal to each other, each of its angles measures 70. So the measure of each angle of an equilateral triangle is 60.

Therefore, it can be said that each angle of the triangle measuring 60 ° is called an equilateral triangle. Moreover, an equilateral triangle is a balanced polygon with three sides. The reason for being a balanced polygon is that the arms of this polygon are equal to each other. If each of the three angles of a triangle is a right angle, it is called a right-angled triangle. The sides of a right-angled triangle can be equal to each other; Again, the arms can be unequal. However, if the lengths of the three arms are equal to each other, then it becomes an equilateral triangle. If two angles of a right-angled triangle are equal to each other, then it becomes an isosceles triangle. Three inscribed squares of a right-angled triangle can be drawn where one side of each square is part of one side of the triangle and the other two vertices of the square are located on the other two sides of the triangle. In the figure, a right-angled triangle is seen. If an angle of a triangle is obtuse, it is called obtuse triangle. An obtuse triangle can have only one obtuse angle. In the figure, an obtuse triangle is seen. Each of the two angles except the obtuse angle of this triangle is a fine angle. Again, the opposite arm of the obtuse angle of this triangle is the largest arm. Moreover, the sum of the three angles of a triangle is 180 ° and the sum of the other two right angles is less than one right angle except the obtuse angle of an obtuse triangle.

If one angle of a triangle is right angle then it is called right angle triangle. 1 right angle = 90. Complementary angles because the sum of these two angles is 90. The Pythagorean theorem is based on a right triangle. If the two sides of this triangle are equal to each other, it is called isosceles right triangle. Moreover, the two right adjacent sides of a right triangle are called perpendicular and ground. In the figure, a right triangle is seen. A right-angled triangle whose arms are not equal to each other is called an equilateral right-angled triangle. Again, the right angle of each of the three angles of the equilateral triangle is called the equilateral triangle. In the figure, an equilateral obtuse triangle is seen. Equilateral triangle is a right triangle on one side and an obtuse angle at an angle of the triangle is called equilateral triangle. Equilateral equilateral triangle as well as right-angled triangle and equilateral triangle. Again, the arms of this triangle are said to be unequal to each other, the three angles are also not equal to each other. In the figure, an equilateral obtuse triangle is seen.

A right-angled triangle whose three sides are unequal to each other is called an equilateral right-angled triangle. In other words, an angle of right angle of an equilateral triangle is called an equilateral right triangle. In the figure, an equilateral right triangle is seen. Equilateral right-angled triangle and right-angled triangle at the same time. Again, because the arms of this triangle are three unequal to each other, each of its right angles is called an isosceles right-angled triangle. Isosceles right-angled triangle on one side such as right-angled triangle; At the same time it is an isosceles triangle. Again, the two sides of this triangle are equal to each other; As a result, the opposite angles of its two equal arms are also equal to each other. If the measurement of one angle of this triangle is known, the measurement of the other two angles can be determined. In the figure, an isosceles triangle is seen. If two sides of an obtuse triangle are equal to each other, it is called isosceles obtuse triangle.