What does the isosceles triangle theorem say?

If two sides of a triangle are congruent , then the angles opposite to these sides are congruent.

What is isosceles triangle example?

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.

How do you solve an isosceles triangle problem?

Use a similar formula, Perimeter = 2A + B, to find the perimeter of the isosceles triangle, where A and B are the length of the legs and base. Solve for area just as you would any other triangle using the formula Area = 1/2 B x H, where B is the base and H is the height.

How do you prove a triangle is isosceles?

Explanation: One way of proving that it is an isosceles triangle is by calculating the length of each side since two sides of equal lengths means that it is an isosceles triangle.

How do you calculate the isosceles triangle?

you can find the area of an isosceles triangle even if you don’t know the length of

What are the rules of an isosceles triangle?

Rules for Isosceles and Equilateral Triangles. The given triangle is an equilateral, it is said to be equiangular. The two sides of the triangle are said to be congruent, and then the two sides of the triangles are the base angles of an isosceles triangles. The triangle is said to be an equiangular, it is represented as equilateral.

What are the properties of an isosceles triangle?

Properties of an isosceles triangle. (1) two sides are equal. (2) Corresponding angles opposite to these sides are equal. (3) Perpendicular drawn to the third side from the corresponding vertex will bisect the third side. (4) Hence the altitude drawn will divide the isosceles triangle into two congruent right triangles.