What are the properties of an isosceles triangle?

An Isosceles Triangle has the following properties: Two sides are congruent to each other. The third side of an isosceles triangle which is unequal to the other two sides is called the base of the isosceles triangle. The two angles opposite to the equal sides are congruent to each other.

What are 3 properties of an isosceles triangle?

An Isosceles Triangle has the Following Properties:

• It has two sides of equal length. …
• The angles opposite to equal sides are equal in measure. …
• The altitude from vertex A to the base BC is the perpendicular bisector of the base BC.
• The altitude from vertex A to the base BC is the angle bisector of the vertex angle ∠ A.

What is one property of an isosceles triangle?

Here is a list of a few properties of isosceles triangles: Two equal sides and two equal angles. The two equal sides of an isosceles triangle are called the legs and the angle between them is called the vertex angle or apex angle. The side opposite the vertex angle is called the base and base angles are equal.

How do you find the properties of an isosceles triangle?

An isosceles triangle is a triangle that has (at least) two equal side lengths. If all three side lengths are equal, the triangle is also equilateral. Isosceles triangles are very helpful in determining unknown angles.

Which properties are true for all isosceles triangles?

Properties of Isosceles Triangles

Of course, the main property of isosceles triangles is their two congruent sides. In addition, all isosceles triangles also have congruent base angles. This property holds true for all isosceles triangles, no matter which direction their apexes point.

What is the rule of isosceles triangle?

An isosceles triangle is a triangle with (at least) two equal sides. In the figure above, the two equal sides have length and the remaining side has length. . This property is equivalent to two angles of the triangle being equal. An isosceles triangle therefore has both two equal sides and two equal angles.

What are the properties of isosceles triangle class 9?

Isosceles Triangle Properties

• As the two sides are equal in this triangle, the unequal side is called the base of the triangle.
• The angles opposite to the two equal sides of the triangle is always equal.
• The altitude of an isosceles triangle is measured from the base to the vertex (topmost) of the triangle.

What is exterior angle property?

What is the exterior angle property? If a side of a triangle is produced, then the exterior angle so formed is equal to the sum of the two interior opposite angles.

What is isosceles triangle Class 7?

A triangle having two sides of equal length is called the isosceles triangle. In an isosceles triangle, the angles that are opposite to the equal sides are equal. In the triangle given below, two sides are of same length and one side is different length. Thus, it is an isosceles triangle.