Knowing two angles and a side that is *not* between them is the AAS (Angle-Angle-Side) case. The AAS Triangle Calculator solves this by first finding the third angle (easy subtraction) and then using the Law of Sines to find the remaining side lengths. Features Non-Included Side: Specialized for when the side is opposite one…

  An Acute Triangle is one where *every* internal angle is less than 90 degrees. The Acute Triangle Calculator is designed to verify and solve these specific shapes. Whether you have three sides (SSS) or other combinations, this tool ensures your triangle is truly acute while calculating all its properties. Features Acute Verification: Automatically checks…

  Finding the area of a triangle is often more than just ‘base times height’. In the real world—and in advanced geometry—you don’t always have those two simple numbers. You might have three side lengths (Heron’s Formula), two sides and an angle (SAS), or even just three coordinate points on a graph (Shoelace Formula). Our…

  Finding the base of a triangle is a common requirement in both geometry and real-world construction. The Base of Triangle Calculator allows you to reverse-engineer this dimension if you know the area or other side lengths. It supports general triangles (using area) and isosceles triangles (using legs). Features Dual Modes: Calculate base from Area…

  The Circumcenter is the magical point equidistant from all three vertices of a triangle. It is the center of the “Circumcircle” that passes perfectly through every corner. The Circumcenter of Triangle Calculator computes this point’s coordinates and the radius of the circle using rigorous coordinate geometry. Features Perpendicular Bisectors: Mathematically replicates the intersection of…

  In physics and engineering, the balance point is everything. The Centroid of Triangle Calculator finds this center of mass (often denoted as G). By taking the coordinates of the three vertices, this tool calculates the exact point where the triangle would perfectly balance on a pin. Features Coordinate Geometry: Uses the (x, y) coordinates…

  In the world of geometry, the ‘hypotenuse’ holds a special title: it is the longest side of a right triangle, stretching boldly across the gap between the two perpendicular legs. The word itself comes from the Greek ‘hypoteinousa’, meaning ‘stretching under’, referring to how it subtends the right angle. Whether you are checking the…

  When you have a triangle where the Law of Sines cannot be applied immediately (like knowing all 3 sides, or 2 sides and a contained angle), you need the Law of Cosines Calculator. This tool is the heavy lifter of trigonometry, allowing you to solve for any side or angle in any triangle, regardless…

  The Law of Sines Calculator is a powerful tool for solving oblique (non-right) triangles. It excels in scenarios where you know a matching pair of angle and opposite side. Crucially, this calculator also handles the “Ambiguous Case” (SSA), detecting whether zero, one, or two possible triangles exist. Features Ambiguous Case Detection: Automatically analyzes SSA…

  The Equilateral Triangle Calculator is the ultimate tool for the most symmetrical shape in geometry. Because all three sides and all three angles (60°) are identical, knowing just one property—Side, Height, or Perimeter—allows you to instantly calculate every other dimension, including the Area. Features Single-Input Solving: Enter just ONE value (Side, Height, or Perimeter)…