![]() The right isosceles triangle is special because it has the property that the two shorter sides are equal in length and the two angles at the base of the triangle are equal in measure. What is special about the Right Isosceles Triangle? The isosceles triangle used in real life when constructing right angles. How the Isosceles Triangle used in real life? For example, the angles in an isosceles triangle are always equal. ![]() Isosceles triangles are important because they have a lot of special properties that other triangles don’t have. The 45-45-90 triangle, also referred to as an isosceles right triangle, since it has two sides of equal lengths, is a right triangle in which the sides. The length of the two congruent sides is called the base, and the length of the other two sides is called the height. Isosceles Right Triangle PropertiesĪn isosceles right triangle has two congruent sides, and the other two sides are not congruent. The perimeter of an isosceles right triangle is the sum of the lengths of its two shorter sides. The area of the triangle is equal to one-half of the product of the base and the height, multiplied by the length of the hypotenuse. The length of the base of the triangle is b, the length of the height of the triangle is h, and the length of the hypotenuse is c. The area of an isosceles right triangle can be found by using the Pythagorean theorem. ![]() ![]() The isosceles right triangle formula states that the length of the hypotenuse of a right triangle is equal to the sum of the lengths of the other two sides. Definition of Isosceles Right TriangleĪ right triangle with two equal sides is called an isosceles right triangle. The angles opposite these two sides are also equal. An isosceles triangle is a triangle with two equal sides. ![]()
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