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In mathematics, an annulus (the Latin word for “little ring”, with plural annuli) is a ring-shaped object, especially a region bounded by two ... more

In mathematics, an annulus (the Latin word for “little ring”, with plural annuli) is a ring-shaped object, especially a region bounded by two ... more

Related to the length of the sides of the triangle and the radius of the circumcircle of the triangle.

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The area of an arbitrary triangle can be calculated from the two sides of the triangle and the included angle.

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The incircle or inscribed circle of a triangle is the largest circle contained in the triangle; it touches (is tangent to) the three sides. The center of ... more

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

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Calculates the surface area of an ellipse with one-half minor and major axis of a and b respectively.

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An equilateral triangle is a triangle in which all three sides are equal.

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An isosceles triangle is a triangle that has two sides of equal length. The area of the isosceles triangle can be calculated by the lengths of the sides.

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Rhombus is a simple (non-self-intersecting) quadrilateral whose four sides all have the same length. Every rhombus is a parallelogram, and a rhombus with ... more

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