Isosceles triangle
a triangle with two sides the same
An isosceles triangle is a type of triangle that has two equal sides and two equal angles. The name isosceles comes from the Greek word isos, which means equal, and skelos, which means leg or side. Therefore, an isosceles triangle has two legs that are congruent. The two angles formed by these two equal sides are also congruent.
Properties of an isosceles triangle:
– Two sides are congruent in length.
– Two angles are congruent in measure.
– The third side and angle are not equal to the other two.
– The base angles, which are formed by the congruent sides and the base, are equal.
The formula for finding the area of an isosceles triangle is:
Area = 1/2 * b * h
Where b is the length of the base of the triangle and h is the height of the triangle, which is the perpendicular distance from the base to the opposite vertex.
Some real-life examples of an isosceles triangle include the roofs of many houses or buildings, where the two sides of the roof are the same length. Isosceles triangles can also be found in various shapes, such as flags, logos, diamonds, or road signs, to name a few.
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