![]() Q3: If the equal angles of an isosceles triangle measures 60°, find the third angle. Q2: If the height of a isoceles triangle is 4 cm and base is 6 cm find the length of equal sides. Q1: What is the perimeter of a field whose shape is in form of a triangle having two equal sides of 10m and third side being 5m. Hence, the area of the given isosceles triangle is 168 sq. The height, perimeter, and area are the three basic formulas of an isosceles triangle, which are discussed below. If we have an Isosceles triangle ABC then,ĪB = AC ⟺ ∠ABC = ∠ADC Isosceles Triangles Formulas “If two angles in any isosceles triangle are equal then the side opposite to them are also equal.” The converse of this theorem is also true which states that ![]() “If two sides in any isosceles triangle are equal then the angle opposite to them are also equal.” The Isosceles Triangle Theorem states that, The perpendicular drawn from the apex angle is also known as the line of symmetry as it divides the isosceles triangle into two congruent triangles.The perpendicular drawn from the apex angle bisects the base of the isosceles triangle and the apex angle.The angle between the legs of an isosceles triangle is called the apex angle or vertex angle.In an isosceles triangle, the two sides of equal length are called the legs, and the third side of the triangle is called the base.An isosceles triangle will always have at least two equal sides and two equal angles.The following are some important characteristics of an isosceles triangle: Triangle with angles 35°, 35° and 110°, etc.Some examples of isosceles obtuse triangles are, Examples of isosceles right triangles are,Īn isosceles triangle in which any one angle is obtuse angles and the other two are acute angles is called an Isosceles Acute triangle. Triangle with angles 65°, 65° and 50°, etc.Īn isosceles triangle that has a right angle is called an Isosceles Right triangle.Role of Mahatma Gandhi in Freedom Struggle.
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