Isosceles (equilateral) triangle calculator

Side a Side b
Angle A Angle B
Area:
Perimeter:
Radius of circumscribed circle:
Radius of inscribed circle:
Height of side a:
Height of side b:
Angle bisector of side a:
Angle bisector of side b:
Medium bisector of side a:
Medium bisector of side b:

Area (K) K2 = b2 * (4 × a2 - b2) / 16
Perimeter 2 × a + b
Angle bisector of side b ( tb ) tb2 = 4 × a2 - b2 / 2
Angle bisector of side a ( tb ) ta2 = b2 × a × (2a + b) / (a ​​+ b)2
Median of side a ( ma ) ma2 = (2 * b2 + a2) / 4
Side b midline ( mb ) mb2 = (4 * a2 - b2) / 4
Circumscribed circle radius a / ( 2 * sin (A)) or b / ( 2 * sin (B))
Inscribed circle radius (r) r2 = b2 × (2a - b) / (4 × (2a + b))