Moment of Inertia of Isosceles triangle can be easily find out by using formulas with reference to x-axis and y-axis.
Moment of Inertia of Isosceles Triangle Formula
Mathematically,
\(I_{0}=\frac{bh^{3}}{36}\)———————————————————–
\(Iy_{0}= \frac{hb^{3}}{48}\)