The formula that is used in this case is:Īrea of an Equilateral Triangle = A = (√3)/4 × side 2 Area of an Isosceles TriangleĪn isosceles triangle has two of its sides equal and the angles opposite the equal sides are also equal. To calculate the area of the equilateral triangle, we need to know the measurement of its sides. The perpendicular drawn from the vertex of the triangle to the base divides the base into two equal parts. Where l is the length of the congruent sides of the isosceles right triangle Perimeter of an Isosceles Right Triangle The perimeter of any plane figure is defined as the sum of the lengths of the sides of the figure. The formula that is used in this case is:Īrea of a Right Triangle = A = 1/2 × Base × Height Area of an Equilateral TriangleĪn equilateral triangle is a triangle where all the sides are equal. Area of an Isosceles Right Triangle l2/2 square units. The simplest and common formula for determining the area of an isosceles type triangle is x base x height. Therefore, the height of the triangle is the length of the perpendicular side.
Area of a Right-Angled TriangleĪ right-angled triangle, also called a right triangle, has one angle equal to 90° and the other two acute angles sum up to 90°. The general formula for calculating the area of an isosceles triangle, if the height and base values are known, is given by the product of the base and height of the isosceles triangle divided by two. The area of triangle formulas for all the different types of triangles like the equilateral triangle, right-angled triangle, and isosceles triangle are given below. The area of a triangle can be calculated using various formulas depending upon the type of triangle and the given dimensions. Let us learn about the other ways that are used to find the area of triangles with different scenarios and parameters. They can be scalene, isosceles, or equilateral triangles when classified based on their sides. Triangles can be classified based on their angles as acute, obtuse, or right triangles. Solution: Using the formula: Area of a Triangle, A = 1/2 × b × h = 1/2 × 4 × 2 = 4 cm 2 Let us find the area of a triangle using this formula.Įxample: What is the area of a triangle with base 'b' = 2 cm and height 'h' = 4 cm? Observe the following figure to see the base and height of a triangle. Once we recognize the triangle as isosceles, we divide it into congruent right triangles. However, the basic formula that is used to find the area of a triangle is: We can find the area of an isosceles triangle using the Pythagorean theorem. Trigonometric functions are also used to find the area of a triangle when we know two sides and the angle formed between them. For example, Heron’s formula is used to calculate the triangle’s area, when we know the length of all three sides. This property is equivalent to two angles of the triangle being equal. In the figure above, the two equal sides have length b and the remaining side has length a. The area of a triangle can be calculated using various formulas. An isosceles triangle is a triangle with (at least) two equal sides.
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