isosceles trigonometriconline Calculator tool

area ：
perimeter ：
circumcircle radius ：
The radius of the tangent circle：
aedge High:
bedge High:
aedge Angle bisector：
bedge Angle bisector：
aedge Center parting line：
bedge Center parting line：

area (K)	K² = b² * (4 × a² - b²) / 16
perimeter	2 × a + b
edge bAngle bisector ( t_b )	t_b² = 4 × a² - b² / 2
edge aAngle bisector( t_b )	t_a² = b² × a × (2a + b) / (a + b)²
edge a Median line ( m_a )	m_a² = (2 * b² + a²) / 4
edge b Median line ( m_b )	m_b² = (4 * a² - b²) / 4
circumcircle radius	a / ( 2 * sin (A)) or b / ( 2 * sin (B))
The radius of the tangent circle (r)	r² = b² × (2a - b) / (4 × (2a + b))