worksheet isosceles and equilateral triangles

The perpendicular drawn from the vertex of the triangle to the base divides the base into two equal parts.

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. 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 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. However, the basic formula that is used to find the area of a triangle is: 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 is a right angled isosceles triangle because it has 1 right angle and 2 equal sides marked with a dash.The area of a triangle can be calculated using various formulas. We can use these properties to solve problems and find missing angles.Īn equilateral triangle has three equal sized side lengths and two equal sized angles.Įquilateral triangles have 3 equal sides and 3 equal angles. We can recognise right angled isosceles triangles because they have 1 right angle, 2 equal sides and 2 equal angles. We can recognise right angled triangles because they have one right angle. We can recognise scalene triangles because all the sides are different and all the angles are different. The 2 equal angles are the base angles of the isosceles triangle. We can recognise isosceles triangles because they have 2 equal sides and 2 equal angles. Equal sides are often labelled with dashes. We can recognise equilateral triangles because they have 3 equal sides and 3 equal angles. We also need to recognise that there are lots of different types of triangles and they are all unique because of the collection of properties each shape may have. We know that all triangles have 3 sides and 3 angles. We need to know the types of triangles and their properties.

Worksheet isosceles and equilateral triangles