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An n-gonal bipyramid or dipyramid is a polyhedron formed by joining an n-gonal

pyramid and its mirror image base-to-base.

The volume of a
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Related to the length of the sides of the triangle and the radius of the circumcircle of the triangle.

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The inscribed sphere or insphere of a regular tetrahedron is a sphere that is contained within the tetrahedron and tangent to each of the ... more

The inscribed sphere or insphere of a regular tetrahedron is a sphere that is contained within the tetrahedron and tangent to each of the tetrahedronâ€™s ... more

Relates the projection of a median and the sides of an arbitrary triangle

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The area related to the semi perimeter of the triangle and the radius of the inscribed circle.

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The inscribed sphere or insphere of cube is a sphere that is contained within the cube and tangent to each of the cube’s faces

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The law of cosines relates the cosine of an angle to the opposite side of an arbitrary triangle and the length of the triangle’s sides.

The law
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The bisector of an angle of a triangle divides the opposite side in two segments that are proportional to the other two sides of the triangle

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A triangle is a polygon with three edges and three vertices. In a scalene triangle, all sides are unequal and equivalently all angles are unequal. When the ... more

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