App Description

Isosceles triangle calculation formula:

Area(K)	K2 = b2 * (4 × a2 - b2) / 16
Perimeter	2 × a + b
Side b bisector ( tb )	tb2 = 4 × a2 - b2 / 2
Side a bisector( tb )	ta2 = b2 × a × (2a + b) / (a + b)2
Side a median line ( ma )	ma2 = (2 * b2 + a2) / 4
Side b center line ( mb )	mb2 = (4 * a2 - b2) / 4
Circumferential circle radius	a / ( 2 * sin (A)) or b / ( 2 * sin (B))
Inscribed circle radius (r)	r2 = b2 × (2a - b) / (4 × (2a + b))

Usage example

Input data:

Side length a: 4

Side length b: 4

Click "Calculate" to output data

Corner A: 60

Corner B: 60

Area: 6.928203

Perimeter: 12

External circle radius: 2.309

Inscribed circle radius: 1.154

Height of a side: 3.464

Height of b side: 3.464

a corner bisector: 3.464

b corner bisector: 3.464

a side of the line: 3.464

B side center line: 3.464

Note

The isosceles triangle side length, angle, enter any two values, you can find the relevant parameters such as the circumference and area of the isosceles triangle.

 

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