Noun
a triangle with two equal sides
Source: WordNetA concave bipyramid has a concave interior polygon. : The face-transitive regular bipyramids are the dual polyhedra of the uniform prisms and will generally have isosceles triangle faces. Source: Internet
At about convert the male's dorsal fin is more than twice the size of the female's and is more of a triangular shape—a tall, elongated isosceles triangle —whereas hers is shorter and more curved. Source: Internet
An equilateral triangle has the same pattern on all 3 angles, an isosceles triangle has the same pattern on just 2 angles, and a scalene triangle has different patterns on all angles since no angles are equal. Source: Internet
A triangle that has two angles with the same measure also has two sides with the same length, and therefore it is an isosceles triangle. Source: Internet
For example, the isosceles triangle theorem states that if two sides of a triangle are equal then two angles are equal. Source: Internet
If one draws an isosceles triangle on the floor, for which one's body forms the base, and one's arms form the equal legs of the triangle, then h (the height of the triangle) is the centerline. Source: Internet