Geometry
Isosceles Triangle Calculator
Area and vertex angle of an isosceles triangle from equal sides a and base b.
Free to use — no sign-up or login.
Height
Area
Vertex angle (°)
Amortization schedule
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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). Related geometry tools sit beside How it works, with no account required.
Using the Isosceles Triangle Calculator
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).