Geometry

Isosceles Triangle Calculator

Area and vertex angle of an isosceles triangle from equal sides a and base b.

Height

Area

Vertex angle (°)

This free Isosceles Triangle Calculator covers Area and vertex angle of an isosceles triangle from equal sides a and base b.

Height to the base is √(a² − (b/2)²). Other geometry tools are linked below.

Isosceles Triangle Calculator — how it works

Area and vertex angle of an isosceles triangle from equal sides a and base b. Typical inputs are Equal side a and Base b. How it works beside the form states the identity the Isosceles Triangle Calculator applies.

FAQ

How do I use the Isosceles Triangle Calculator?

Open the Isosceles Triangle Calculator, fill Equal side a and Base b, and read the result. Height to the base is √(a² − (b/2)²).

What formula does the Isosceles Triangle Calculator use?

The Isosceles Triangle Calculator uses the identity in How it works. In words: Height to the base is √(a² − (b/2)²).

More tools in Geometry and popular picks.