Isosceles Triangle
An isosceles triangle is a type of triangle that has two sides of equal length
An isosceles triangle is a type of triangle that has two sides of equal length. This means that two of the three angles in an isosceles triangle are also equal. The side opposite the base angles, which are the two equal angles, is called the ‘base’ of the triangle. The other side, which is not equal in length to the base, is called the ‘legs’ of the triangle.
In an isosceles triangle, the base angles are always congruent (equal). This is a consequence of the fact that the two sides opposite those angles have the same length. The third angle, which is opposite the base, is called the ‘apex’ or the ‘vertex angle’. It is the largest angle in the triangle if the base angles are acute (less than 90 degrees), and the smallest angle if the base angles are obtuse (greater than 90 degrees).
The perimeter of an isosceles triangle can be found by adding the lengths of all three sides, while the area can be calculated using the formula: area = (base length * height) / 2. The height of the isosceles triangle can be found by drawing a line segment from the apex to the base, perpendicular to the base.
Isosceles triangles have several interesting properties and are commonly used in various mathematical applications, including geometry and trigonometry.
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