Isosceles Triangle Calculator
Calculate the area, perimeter, height, and other properties of an isosceles triangle.
Isosceles Triangle Properties
Properties
- Two sides are equal in length
- Two angles are equal (base angles)
- The altitude from the vertex angle bisects the base
- The altitude from the vertex angle bisects the vertex angle
Formulas
- Height: h = √(a² - (b/2)²)
- Area: A = (b × h)/2
- Perimeter: P = 2a + b
- Base Angle: β = (180° - α)/2
Note: An isosceles triangle has two equal sides and two equal angles. The vertex angle is the angle between the equal sides.
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