Calculator category
Triangle Geometry Calculators
Solve triangle sides, angles, areas, heights, classifications, and special cases. Use this collection when solve triangle sides, angles, areas, heights, classifications, and special cases. Start with the calculator matching the values you possess, then use related tools to verify or extend the result.
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Triangle Geometry topics
Select a topic to reveal its calculators. Multiple topics can remain open at the same time.Triangle GeometrySolve triangle sides, angles, areas, heights, classifications, and special cases.29 available
- Triangle CalculatorSolve a triangle from SSS, SAS, ASA, AAS, or SSA data.Open calculator
- Right Triangle CalculatorSolve every side, acute angle, area, perimeter, and hypotenuse altitude from two independent measures.Open calculator
- Triangle Area CalculatorFind triangle area from base and height, two sides and an included angle, or three sides.Open calculator
- Triangle Height CalculatorFind an altitude from area and base or from all three side lengths.Open calculator
- Triangle Angle CalculatorRecover all three interior angles from three valid side lengths.Open calculator
- Heron's Formula CalculatorCalculate triangle area and semiperimeter from three sides.Open calculator
- Triangle Perimeter CalculatorAdd the three sides of a valid triangle.Open calculator
- Triangle Classification CalculatorClassify a valid triangle by its sides and angles.Open calculator
- Triangle Inequality CalculatorCheck three sides or find the strict range for a missing third side.Open calculator
- Triangle Congruence CalculatorCompare corresponding data under SSS, SAS, ASA, AAS, or right-triangle HL criteria.Open calculator
- Equilateral Triangle CalculatorCalculate area, perimeter, height, inradius, and circumradius from one side.Open calculator
- Isosceles Triangle CalculatorCalculate an isosceles triangle from its equal side and base.Open calculator
- Special Right Triangles CalculatorScale 45-45-90 and 30-60-90 triangles from any supported known side.Open calculator
- Similar Triangles CalculatorFind a scale factor or a missing corresponding measure in similar triangles.Open calculator
- Pythagorean Theorem CalculatorSolve or verify a right-triangle side and retain an exact integer radical when available.Open calculator
- Pythagorean Triples CalculatorGenerate an integer Pythagorean triple with Euclid's formula.Open calculator
- Triangle Midsegment CalculatorFind the segment joining two side midpoints from the parallel third side.Open calculator
- Triangle Circumcircle CalculatorFind a triangle's circumradius and circumcircle measures from three sides.Open calculator
- Triangle Incircle CalculatorFind inradius, incircle measures, and tangency segments from three sides.Open calculator
- Triangle Incenter CalculatorFind the incenter from three vertices and report its equal side distance.Open calculator
- Triangle Orthocenter CalculatorFind the intersection point of a triangle's three altitudes from its vertices.Open calculator
- Triangle Median CalculatorFind the median to side a and the centroid's 2:1 division.Open calculator
- Triangle Angle Bisector CalculatorFind the internal angle-bisector length from A and its foot on BC.Open calculator
- Triangle Excenter & Excircle CalculatorFind all three exradii from triangle side lengths.Open calculator
- Nine-Point Circle CalculatorFind the nine-point center and radius from triangle vertices.Open calculator
- Euler Line CalculatorFind circumcenter, centroid, orthocenter, and their Euler-line relationship.Open calculator
- Ceva's Theorem CalculatorCheck cevian concurrency or solve a missing positive division ratio.Open calculator
- Menelaus' Theorem CalculatorCheck collinearity or solve a missing directed side ratio.Open calculator
- Stewart's Theorem & Cevian Length CalculatorFind a cevian from three sides and the two segments into which it divides the opposite side.Open calculator