isosceles triangle
A triangle that has 2 equal sides
An isosceles triangle is a type of triangle where two sides are of equal length, and the angles opposite to those sides are also of equal measure. In other words, an isosceles triangle has two equal sides and two equal angles.
Properties of Isosceles Triangle:
1. Base angles: The angles opposite to the two equal sides are called base angles, and they are congruent (of equal measure)
2. Vertex angle: The angle opposite to the base is called the vertex angle.
3. Median: The median is the line segment drawn from the vertex angle to the midpoint of the base, and it bisects the vertex angle.
4. Perpendicular bisectors: The perpendicular bisectors of the two equal sides meet at the vertex of the triangle.
5. Altitude: The altitude, or the line segment drawn from the vertex angle perpendicular to the base, bisects the base and divides the triangle into two congruent right triangles.
Some of the applications of the isosceles triangle include the design of roofs and bridges, as well as in the field of trigonometry, where it is used to derive formulae for sine, cosine, and tangent.
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