ISOSCELES TRIANGLE AREA, HEIGHT AND SECTION PROPERTIES CALCULATOR


Isosceles triangle area, altitude (height), distances from the centroidal axes to the vertices of the triangle, second moment of area and radius of gyration about the centroidal axes are calculated parameters by following calculator.

Isosceles triangle formulas for calculations are given in the "List of Equations" section.


Triangle Section Properties Calculator:

Sectional properties of isosceles triangle
Unit System (Quick selection)
INPUT PARAMETERS
Parameter Value
Equal sides length [a]
Remaining side [b]

RESULTS
Parameter Value
Cross section area [A] ---
Second moment of area about x axis [Ix] ---
Second moment of area about y axis [Iy] ---
Radius of gyration [rx] ---
Radius of gyration [ry] ---
Altitude [h] ---
Distance from the centroid to the vertice [xc] ---
Distance from the centroid to the vertice [yc] ---

Note: Use dot "." as decimal separator.

 

Definitions:

Equilateral Triangle: A triangle with all three sides of equal length.

Second Moment of Area: The capacity of a cross-section to resist bending.

Radius of Gyration (Area): The distance from an axis at which the area of a body may be assumed to be concentrated and the second moment area of this configuration equal to the second moment area of the actual body about the same axis.

List of Equations:


Isosceles Triangle
Sectional properties of isosceles triangle
Parameter Symbol Equation
Cross section area A A = b*h/2
Altitude h h=(a2-(b2*1/4))0.5
Area moment of inertia Ix Ix = (b*h3)*1/36
Area moment of inertia Iy Iy = (h*b3)*1/48
Distance from the centroid to
the back of the long leg
xc xc=b/2
Distance from the centroid to
the back of the short leg
yc yc=h*2/3
Radius of gyration rx rx = 0.2357*h
Radius of gyration ry ry = 0.2041*b

Reference: