Inscribed Triangle Calculator

Inscribed Triangle Calculator

Are you looking to calculate the measurements of an inscribed triangle within a circle? Look no further! Our inscribed triangle calculator can help you find the sides, angles, and area of the triangle with just a few simple inputs. Whether you’re a student studying geometry or someone working on a construction project, this tool is perfect for you. Read on to learn more about inscribed triangles and how to use our handy calculator.

What is an Inscribed Triangle?

An inscribed triangle is a triangle that is drawn inside a circle in such a way that its three vertices lie on the circumference of the circle. This means that the triangle is completely enclosed within the circle, with each of its sides touching the circle at one point. Inscribed triangles have some unique properties that make them interesting to study in geometry.

Inscribed Triangle Calculator

Calculating an Inscribed Triangle

When it comes to calculating the measurements of an inscribed triangle, there are a few key formulas and concepts to keep in mind. One of the most important properties of inscribed triangles is that the angle subtended by a chord at the circumference of a circle is equal to half the angle subtended by the same chord at the center of the circle.

To find the sides, angles, and area of an inscribed triangle, you can use the following formulas:

  • Law of Sines: a/sin(A) = b/sin(B) = c/sin(C)
  • Heron’s Formula: Area = √(s(s-a)(s-b)(s-c)), where s = (a + b + c)/2

Using the Inscribed Triangle Calculator

Our inscribed triangle calculator makes it easy to find the measurements of an inscribed triangle within a circle. Simply enter the radius of the circle and the three angles of the triangle, and the calculator will provide you with the lengths of the sides, the remaining angle, and the area of the triangle. It’s a quick and efficient way to solve for the unknowns in an inscribed triangle problem.

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Let’s say we have a circle with a radius of 5 units, and we want to find the measurements of an inscribed triangle with angles of 30°, 60°, and 90°. By entering these values into the calculator, we can determine that the sides of the triangle are approximately 8.66 units, 5 units, and 10 units, with an area of 21.65 square units.


Inscribed triangles are an interesting concept in geometry, and being able to calculate their measurements can be a useful skill. Our inscribed triangle calculator simplifies the process of finding the sides, angles, and area of a triangle inscribed within a circle, making it easier for students and professionals alike. Give it a try and see how this tool can help you with your geometry problems!